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Why is hf so reactive

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Therefore, H 2SO 4 is much easier to contain in the event of an accidental I recently attempted to donate blood however, I received a letter from the blood center saying that I tested positive/reactive to Hepatitis B Core Antibody, but negative for Hepatitis B Surface Antigen. Why did this once-exotic, highly reactive element become so important? There are many reasons why organic compounds are fluorinated, most of which may be understood in terms of fluorine’s unique atomic properties. Why is CO more reactive than N2 despite CO's bond being comparatively stronger? The bond dissociation energy of carbon monoxide is +1084 KJmol-1 while that of nitrogen, N2, is +945KJ mol-1. Q- Why is Fluorine more reactive than other halogens? Fluorine is more reactive. 1-3 Both bloods tests are used to detect inflammation in the body. (a) In. Of course the vast majority of acids are much more boring. Think of those scenes in the Alien movies, where the alien's blood drips through solid metal, destroying everything in its path. After a bit of messing around the Morse Code practice is pretty much up and running again. The halogens – fluorine, chlorine, bromine, iodine, astatine, their physical properties, their chemical reactions and reactivity An explosive material, also called an explosive, is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by the production of light, heat, sound, and pressure. The thing that makes fluorine so reactive is its electronegativity. Cyber Space. Measures, AG6K, April 1988See also Salt - sodium chloride - extraction - uses of halogens. not satisfied with the answer it ask “why” not what “happens” Reply I recently acquired some highly reactive sodium metal. With halogens, the higher an element is in the column, the more reactive it is. Interhalogen (BrF3 & ClF3) • Plasma is used to energize a chemically inert projectile so Reactive HR also means adding new policies and procedures in response to problems that arise. Remember the driving force of a reaction is the forming of the weaker acid/base pair i. If you don't feel like reading the rubbish on this page - try the short version. So there we have it – the basic, broadband, no-tune (or self-tuning) solid-state HF amplifier. Cycloproprane: Why is it so reactive? CONVERGING WHY WHY WHY WHY WHY??? Describe why chemists might sometimes store reactive chemicals in argon, Ar: To which family does argon belong; I have questions on the periodic table (I dont know anything about it) Where are the elements that don't react and that are highly reactive located Why Your Child is So Reactive. 7 HO pK b = 14 – pK a = -1. My question is does that cause the C-reactive protein to very elivated, if so what does this mean, because mine was very elivated. ] Counterintuitive Examples and Discrepant Events. Why would it be more reactive? Yahoo India Answers Sign in Sign in Mail ⚙ Help So a process in which a chloride anion or bromide anion is formed is generally going to be thermodynamically favored over an analogous process where a hydroxide anion is formed. instance Applicative ((->) a) where pure = const hf <*> xf = a -> (hf a) (xf a) instance Monoid b => Monoid (a -> b) where mempty = pure mempty mappend = liftA2 mappend We’re in luck. Reactive arthritis can affect your skin a variety of ways, including a rash on your soles and palms and mouth sores. It is reactive to noise such as the washer/dryer, central heat/ac, shower, kitchen faucet water running, sometimes even running my hand through my hair. The level of C-reactive protein (CRP), which can be measured in your blood, increases when there's inflammation in your body. most stable is HF (ii An explosive material, also called an explosive, is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by the production of light, heat, sound, and pressure. is a more stable complex than the highly reactive silicon tetrachloride. See more of Facts of Chemistry on Facebook. Share to: Chemistry Why is hydrofluoric acid (HF) so even things we think of as completely nonreactive like glass because the fluoride ion is more reactive than the oxygen Why Is Fluorine the Most Reactive Halogen? Fluorine is the most reactive of the halogens because it is at the top of the halogen group, which is the second to right group on the periodic table. It ionizes in aqueous solutions in a similar fashion to other common acids: HF + H2O ⇌ H3O+ + F. as formate, acetate, propionate, and butyrate, as opposed to the IUPAC nomenclature methanoate, ethanoate, propanoate and butanoate. HF has a very small Ka but here is what is important to understand: -Flouride is a very very reactive molecule -Le Chatelier's Principle says that if you remove a product from an equilibrium you will create more of the products and shift the equilibrium to the right. This high attraction of fluorine for most other atoms gives rise to a very strong H—F bond that is not broken when HF dissolves in water. Status: ResolvedAnswers: 2toxicology - Why is hydrofluoric acid so dangerous if it https://biology. 49% HF - fast removal of oxide, poor photoresist adhesion BHF - medium removal of oxide, with photoresist mask Dilute HF - removal of native oxide, cleans, surface treatments HF/HCl or HF/Glycerin mixtures – special applicationsChapter 2,4,6. HF Radar Antenna Principles 101 whose real part is 50 ohms and reactive (imaginary) part is zero. Why is fluorine more reactive than iodine despite the weaker I-I bond? Ask Question Bond breaks into corresponding ions. For several years I have been thinking about ways to build a solid state legal-limit amplifier for amateur radio use. Besides, O is more electronegative than Cl, so it should "steal" the electron easier. Despite the difficult and sometimes explosive properties of fluorine, it is a vital Ester names are derived from the parent alcohol and the parent acid, where the latter may be organic or inorganic. An explosive charge is a measured quantity of explosive material, which may be composed of a single ingredient or a combination of two or more. [Uses have been summarized in Content in a Nutshell and in Links/Connections. Silicon reacts vigorously with all the halogens to form silicon tetrahalides. operating their HF station without any need for their previous tall towers and favourite beam antennas or unwieldy G5RV or long wire. Why is H3C- so reactive. (a) In the laboratory, HF and HCl can be generated by combining CaF 2 and NaCl with concentrated sulfuric acid. not satisfied with the answer it ask “why” not what “happens” Reply Maybe that’s why the government is in no great hurry to crack down on Hvalur hf. Click here 👆 to get an answer to your question ️ Why is francium less reactive than caesium? so that you can Why do Zr and Hf shows similar properties Why is Fortnite’s popularity so enduring? Epic has generally been extremely reactive to fan feedback over changes or new items, often times changing things the same day if there’s a The gentleman seemed to be reactive to the things he was observing so we were certain he was not instigating. Fluorine (F), most reactive chemical element and the lightest member of the halogen elements, or Group 17 (Group VIIa) of the periodic table. At HF this "matched" condition means all the power available coming down the cable goes into the antenna antenna with a 3 kHz bandwidth, why is that so bad? Well, your range resolution has HF is highly reactive with anything that is even slightly basic. For example, our skin exists as an amide, and because of HF's stronger hydrogen bonds, it is a stronger (better) catalyst than hydrochloric acid, for example. Explain, taking the polarity of the carbonyl group intoaccount. Hydrogen fluoride is a chemical compound with the chemical formula HF. org/cgi/content/full/356/6/e5?query=TOC HF has a very small Ka but Hydrofluoric acid is classified as a weak acid because of its lower dissociation constant compared to the strong acids. Radicals can have positive, negative or neutral charge. Your physician may order a CRP test if he suspects you have an inflammatory disease such as lupus or rheumatoid arthritis, or to determine if anti-inflammatory medication is working. What exactly is hep c "reactive" mean? meekie09 I have been in the healthcare field for quite some time as a stna but just recently became a lpn and I have given blood so many times and nothing was ever found to be abnormal. Is there a specific definition somwhere? Because I would have said that, in general, it depends on the kind of reaction. g. TV Schedule So why are these guys so But HF is so reactive, and so deadly that it was never seen or used in any of the 10 years of chemistry demonstrations and labs I took part in. HF is an ideal acid for etching of glassware due to reactive nature with silicates but relatively low acidity (see Table 1). Rector, S. The other way is by the so-called “di di” reaction, which reacts equal amounts of DF and methylphosphonyl dichloride (DC), which yields Sarin and hydrogen chloride (HCl), also a powerful acid. Vinegar (which contains ethanoic acid) and citric acid (found in, guess what, citrus fruits)…2 So where’s the catch; if the small loop is such a good antenna why doesn’t everyone have one and dispense with their tall towers and traditional antennas?Some thoughts on low cost, solid state, efficient, kilowatt-class HF linear amplifiers. to get a clearer understanding of why it is so important as an Causes and risk factors for reactive attachment disorder. Learn why fiber reactive dye is a good choice and what fabrics to use for your project. Thank you so much for putting that on there. no, it’s a weak acid. A higher than normal CRP level does not necessarily mean you have a medical condition needing treatment. or. HF + H2O --> F- + H3O+ Why is HF called a weak acid if it is very reactive? Hydrogen bonding helps stabilize HF so it less apt to dissociate than the other Alkaline metals are among the most reactive. Therefore, its conjugate base is very strong. So just make sure you cross these off your New Year’s to-do list – your body, mind and soul will be thankful. Measures, AG6K, April 1988 CENTRE FED MULTIBAND HF DIPOLES - G5RV DERIVATIVES EASY AND SIMPLE HF WIRE ANTENNAS THAT WORK. A couple of months ago I started leading a team that was using Chef to manage our deployment infrastructure. It reacts violently with water liberating oxygen and forming hydrofluoric acid (HF). Even though they are the best available, their service life in 70% HF is considerably less than linings in nearly all other services. If you go down a group of the table, each element has more “shells of electrons”; these “shells” shield the attractiveness of the protons in the nucleus for the electrons on the outside. Tie dye kits contain fiber reactive dye, and so does cold water dip dye The erythrocyte sedimentation rate (ESR or sed rate) and C-reactive protein (CRP) are among the oldest laboratory tests still in use. Group 7 of the Periodic Table – The Halogens (non-metals). The other hydrogen halides don't form hydrogen bonds. Reactive intermediates are a carbon species that can be electron deficient, a quality which imparts the reactivity to these organic species. HF is called a weak acid, and yet it is very reactive. Halogens are reactive The difference in electronegativity means that the Hydrogen atom has little of the electron density and is easily removed or separated from the Florine creating a high concentration of free Hydrogen ions # H^+1# This makes Hydroflouric acids extremely reactive. Iron is reactive. Fluorine is the most electronegative of all elements and it has one of the highest ionization potentials. nejm. First, both customer and power-system equipment are designed to operate within a range of voltages, usually within±5% of the nominal voltage. If you don't feel like reading the rubbish on this page - try the short version. However, it is a weak acid and not a strong acid because it does not completely dissociate in water (which is the definition of a strong acid) or at least because the ions it forms upon dissociation are too strongly bound to each other for it to act as a strong acid. Hydrogen halides (HF, HCl, HBr, HI) are highly reactive compounds that have many industrial and laboratory uses. Thanks to the big screen, many of us think of acids as dangerous, burn-through-anything substances. Why is nitrogen important? Nitrogen (N) is one of the building blocks of life: it is essential for all plants and animals to survive. Create New Account. Why is bromine very reactive while krypton is un reactive? Krypton is a noble gas and has a full outer electron shell. February 20, 2017 7:58 pm. Ever wonder why cats are so reactive? We know that cats can smell, hear, and see better than we can, and this must mean that something unsettling is actually more distressing to a cat than we can even perceive. The position of the elements is related to their electronic structure. But we can’t change the past, so dwelling on those mistakes is a form of reactive behaviour. So the better it is at "stealing" electrons, the more reactive it will be. But, the reverse is observed. What is the Difference Between Reactive and Proactive? Reactive and proactive are approaches that people take in different situations in life. So Does Learning. Its chemical activity can be attributed to its extreme ability to attract electrons (it is the most electronegative element) and to the small size of its atoms. HF is a toxic, volatile gas at these conditions, while H 2SO 4 is a toxic liquid. Remember, if the most reactive element is already in the compound, there will be NO chemical reaction. The chemical name for the compound with the formula Na(2)S is List three elements from the group containing the most reactive Question: Analyze bond angles in cyclopropane and explain why cyclopropane is so reactive Analyze bond angles in cyclopropane and explain why cyclopropane is so reactive Show transcribed image text Analyze bond angles in cyclopropane and explain why cyclopropane is so reactive I am confused as to what it means for reactive power to be delivered or absorbed between load and while the Capacitance ABSORBS reactive power. I am still working on the Newsfeeds so that section is not yet operational but I hope to get that ironed out shortly. The rarity of reactive attachment disorder causes research on the condition to be significantly lacking. The males search for sodium and gradually collect it, presenting it to their mates later as a ritual. Hydrofluoric acid or HF is an extremely corrosive acid. So there we have it – the basic, broadband, no-tune (or self-tuning) solid-state HF amplifier. Why HF Radio? High Frequency (HF) radio is used for first-line and backup communications over long distances, mainly in remote regions of the developed world and in developing countries. - Congratulations to Roger on being awarded - The Charles Taylor "Master Mechanic" Award by the FAA ADDING 160 METER COVERAGE TO HF AMPLIFIERS (updated original manuscript, article published in January 1989 *QST*) by Richard L. Why Entresto Is a Winner for Heart Failure JULY 04, 2016 Novartis’s heart failure (HF) drug, sacubitril/valsartan (Entresto), was approved by the FDA last year to reduce the risk of cardiovascular (CV) death and hospitalization in patients with chronic HF (NYHA class II-IV) and reduced ejection fraction (EF). Created with Sketch. When lymph nodes enlarge in dogs, they may do so because of reactive lymphoid hyperplasia, lymphadenitis and cancer. These 14 additional elements bring f electrons for Reactive business strategies are those that respond to some unanticipated event only after it occurs, while proactive strategies are designed to anticipate possible challenges. Reactive attachment disorder (RAD) is a rare condition of Answer to Hydrogen halides (HF, HCl, HBr, HI) are highly reactive compounds that have many industrial and laboratory uses. Because radicals react so quickly they are often very difficult to study. Inhaling or ingesting even a The chemical hazards listed are based on the Department of Transportation Hydrofluoric Acid (HF) is one of the most hazardous chemicals at used Cornell. IS CARBON HIGHLY REACTIVE OR LESS REACTIVE. So why is chlorine more reactive than bromine since it should be harder to break those bonds? Since the explanation of the distance of valence electrons increases works only for atoms of the molecule of the elements meaning Cl and Br. PLAY. Also from the point of view of Hydrogen bonding HF exhibits the strongest hydrogen bonding with itself and with water ,which is why dissociation is further weakened than HCl. com FREE DELIVERY possible on eligible purchases 11/23/2008 · 1. So, it reacts with fluorine, F2, chlorine, Cl2, bromine, I2, and iodine, I2, to form respectively silicon(IV) fluoride, SiF4, silicon(IV) chloride, SiCl4, silicon(IV) bromide, SiBr4, and silicon(IV) iodide, SiI4. Doc Brown's Chemistry KS4 science GCSE/IGCSE/O level Chemistry Revision Notes. Now, we can ask: What makes a good solid-state HF amp?ADDING 160 METER COVERAGE TO HF AMPLIFIERS (updated original manuscript, article published in January 1989 *QST*) by Richard L. HI is a very strong acid (The larger the molar mass the stronger it is), so its conjugate base will be weak. I want to know why HCl is a much stronger acid than H2O. HF corrodes glass and HCl doesn't because silicon tetrafluoride is a more stable complex than the highly reactive Why Is Fluorine the Most Reactive Halogen? Fluorine is the most reactive of the halogens because it is at the top of the halogen group, which is the second to right group on the periodic table. ) The current for both the active AND the reactive power is flowing through Rloss B. In order to study radicals and other reactive species found in space, such as carbenes, chemists often "isolate" them from each other. The great attraction that fluorine has for most other atoms is the cause of HF(aq) being a weak acid. com FREE DELIVERY possible on eligible purchasesWhy We’re Migrating From Chef to Octopus. Support provided by: NOVA. What is C-Reactive protien in a Why are the symptoms of reactive airways disease common among children? As a young child's immune system (ability to fight infection) develops, he is less able to fight off colds and other illnesses. Reactive Oxygen Species (ROS) is a phrase used to describe a number of reactive molecules and free radicals derived from molecular oxygen. What is the more reactive acid, HF or HCl? 3. February 27, 2014 12:29 pm. Why would it be more reactive? Yahoo Canada Answers Sign in Sign in Mail ⚙ Help This video excerpt from NOVA's "Hunting the Elements" explains why some elements are more reactive than others. Prognostic value and After a bit of messing around the Morse Code practice is pretty much up and running again. STUDY. HR professionals and managers want to keep employees happy so that production is high. HCl dissociates almost completely,whereas HF dissociates partially and hence HCl is a stronger acid then HF. Next day it was white again. So in this case the reactivity comes from the Flourine rather than the acid which is H+ So in this case the reactivity comes from the Flourine rather than the acid which is H+ Corrosion works by the acid-base catalysis of the hydrolysis esters and amides. Maybe they’re giving them one last hurrah before lowering the curtain on them. Complexes of HF with organic bases such as Olah’s reagent (pyridine/HF complex)2 and triethylamine/HF complex3 are liquids at room temperature, so they are easier to handle. However, up to half of all patients with HF present with an ejection function within the normal range (so-called heart failure with preserved ejection fraction (HF-PEF)). Reactive attachment disorder can develop when a child fails to receive adequate comfort and nurturing from caregivers. why is hf so reactiveHydrofluoric acid is a solution of hydrogen fluoride (HF) in water. Log In. 1 Although it was deemed a In chemistry why is nitrogen not very reactive - trivia question /questions answer / answers why is benzyne such a reactive moleculewhy is it so unstable? is there any reason other than the fact that triple bonds This yields a mix of Sarin and hydrogen fluoride (HF), a potent acid. 5110 student Dear 5 Mar 2018 HF is nasty stuff, but as acids go it is relatively weak. e. Loading Unsubscribe Are You Emotionally Reactive? by Aletheia Luna / 3 min read / 16 Comments. From the list of nucleophiles given below, which one would you expect to be the most reactive? why is iron more reactive than copper - Science - Chemical Reactions and Equations iron has 4 unpaired electron in 3d subshell but copper has only 1 so iron will >. 08 Dec. Why I built my own Vertical Dipole. why is hf so reactive Due to its instability it is less selective. the Halogen Group of elements) of the periodic table. . Chemicool. CO has a stronger bond but is more reactive. http://content. so it can be broken very easily. Why is fluorine more reactive than iodine despite the weaker I-I bond? But, the reverse is observed. HI is the strongest among the hydrohalic acids. Because the electrons in a molecule of hydrogen fluoride (HF) are more strongly pulled toward the fluorine atom, the molecule is ____ so 5 valence electrons. Pans made of these materials conduct heat very well and are ideal for cooking rice, melting sugar, and pan-browning meat. These guidelines are intended to assist laboratory personnel in quenching reactive substances safely so that they may be transferred to ordinary Hazardous Waste containers. CRP is produced in the liver and its level is measured by testing the blood. - Congratulations to Roger on being awarded - The Charles Taylor "Master Mechanic" Award by the FAA (click here to read his Autobiograhy) Click to see a larger imageCENTRE FED MULTIBAND HF DIPOLES - G5RV DERIVATIVES EASY AND SIMPLE HF WIRE ANTENNAS THAT WORK. Because fluorine is the most chemically reactive element, it must be handled with extreme care as it can sometimes explode on contact with all other elements excluding oxygen, helium, neon and Thus, it is very difficult to separate H and F in the bond that they form, and thus, they hardly dissociate in solution. Picture this. Signup For Our Newsletter. 1 Answer anor277 Jun 8, 2017 Answer: What nonmetals are most chemically reactive? Why is H3C- so reactive. Inspired by the possibilities shown in the prior art of the asymmetrical hatted vertical dipole I decided to test the real thing. There is something called the Critical RELATIONSHIPS BETWEEN HUMAN FACTORS, SAFETY historically that is through reactive data. • What type of reaction will the following be: • Br 2 (aq) + NaCl (aq) • Trick question! There will be no reaction. Bromine is less reactive than Chlorine, so there will be no reaction. There are plenty of events in life that we simply cannot predict. WHAT TO EXPECT FROM OUR HF AMATEUR RADIO BANDS! A GENERAL DESCRIPTION OF EACH HAM BAND Various states and groups seem to frequent a particular frequency so tune Chip, why is it you always are so quick to throw hams under the proverbial bus if it means that some government or commercial entity has the potential to make . 4-6 Inflammation can present as either acute (ie, from injury or infection) or chronic. But the existing features are not outdated by any stretch so they are still worth mentioning here. Chemistry Basics Chemical Laws Molecules Periodic Table Projects & Experiments What makes hydrofluoric acid one of the worst acids? First, it eats through just about anything. 7 The reason why LiAlH4 is so reactive is because it is unstable. The 50Ω source could also be realized with reactive components which would improve efficiency, but preclude usage on multiple frequencies. Related Pages. 4. Whatever the reasons, a rare blue-fin hybrid died so that Kristján Loftsson can keep playing Captain Ahab, to no one’s benefit—not even his own, and certainly not Iceland’s. These 14 additional elements bring f electrons for I'm doing a chemistry assignment and always come across websites that tell me how mcuh fluorine is so reactivelike, giving examples of how they react with some noble gases like krypton, xenon, and radonand is extreemly reactive with moisture in the air, which forms hydrofluoric acid and the list goes on and on and onbut i want 2 know WHY it&#39;s so reactive, what makes it so highly Reasons for so named: Reactive dyes are so called because this is the only type of dye, which has reactive group, and that reactive group reacts chemically with fibre polymer molecules and form covalent bond. Chapter 2,4,6. HF is corrosive because of its proton; it's corrosive to bones because of its fluoride. Rapid release of very toxic or corrosive gases occurs when water contacts some dangerously reactive materials. All Topics Topic Science Chemistry » Why is nitroglycerin so explosive? Why is it so violently reactive? Search this Question Cycloproprane: Why is it so reactive? CONVERGING WHY WHY WHY WHY WHY??? Describe why chemists might sometimes store reactive chemicals in argon, Ar: To which family does argon belong; I have questions on the periodic table (I dont know anything about it) Where are the elements that don't react and that are highly reactive located Reactive attachment disorder is a condition in which your child is unable to establish healthy attachment with you, their parent or primary caretaker. Reactive TNA occurs when a problem is already obvious, creating the need for specialized training to correct the specific problem. Reply. Why are we so reactive? Reaction is a feeling of tension in the body – low or high – which tells us that something feels uncomfortable. Box 270116, D-01171 Dresden, Germany Thus, it is very difficult to separate H and F in the bond that they form, and thus, they hardly dissociate in solution. $\ce{HF}$ is also reactive with glass, through silicon. Caesium, the most reactive metal in the periodic table, reacts extremely violently – hence why it can’t be demonstrated in a classroom! Nope, HF is a medium acid ( 5% < alfa < 50%) Reply. HF is a reactive solvent in the electrochemical fluorination of organic compounds. PETER BREGMAN: It’s a great question. (between La and Hf). You need to have DC to make DF. 00% mixture by volume in an inert g such as helium. So my questions are in regard to HCl and HF (I used HCl my strong acid example): 1. The following weekly issues have been generously provided by Roger Hughes, President, Decoding Human Factors, Inc. Even though the symptoms are similar, the causes are different. This reaction with sulfuric acid is used to clean metal. Search. This can lead to difficulty connecting with others and managing their emotions, resulting in a lack of trust and self-worth, a fear of getting close to anyone, anger, and a need to be in control. Some days my T is lower and I am not quite so sound sensitive. Reactive approach entails action after an event has taken place to either minimize its effects or to take advantage of the event. aromatic ring to be more reactive Why are Noble Gases Unreactive? The atomic structure of Noble gases is the reason that they are unreactive or have little tendency to react with other substances. The acidity of hydrofluoric acid . Esters derived from the simplest carboxylic acids are commonly named according to the more traditional, so-called "trivial names" e. The fact it is a weak acid allows a masks to be used on some areas of glass so they can remain protected from the HF and so are not etched. HF interferes with nerve function, meaning that burns may not initially be painful. Something bad happens, so we react and fix the system to otherwise may Many major trials have enrolled patients with low LVEF ≤ 35%–40% (so-called heart failure with reduced ejection fraction or HF-REF). Forgot account? or. The poisonous affects of HF vs HCl has nothing to do with the acidity, but with the toxicity of the fluoride ion produced by HF. reactive power needs to be kept within a given band to keep With 20 MVAR HF With 20 MVAR HF + 2x50MVAR MSC Figure 3. Aviation Human Factors Industry News. stackexchange. Reactive airways disease symptoms can occur because of airway swelling. Its violent reactive nature contrasted with its use by amorous butterflies. Buy products related to rabbit trap products and see what customers say about rabbit trap products on Amazon. HF corrodes glass and HCl doesn't because silicon tetrafluoride is a more stable complex than the highly reactive silicon tetrachloride. It is grouped under “Trauma-and-Stressor-Related Disorders” in the (For most transmission lines at HF and VHF frequencies, dielectric loss is negligible, and most of the loss is due to the resistive loss in the conductors, so this is a reasonable model. However, three years ago before entering college I received the set of three immunizations against Hepatitis. It reacts with most acids like sulfuric acid. August 26, 2018 at 1:24 am. Blair has two linings suitable for HF at all concentrations, VE536BC and CC4624. This article presents an overview for the beginner learner on Doctor answers on Symptoms, Diagnosis, Treatment, and More: Dr. We all know the sense of obligation – when we have to buy a gift for an event or celebration that’s already tomorrow, but we still have no idea of what to give. It is a precursor to almost all Because of its high reactivity toward glass and moderate reactivity toward many metals, hydrofluoric acid is CaF2 + H2SO4 → 2 HF + CaSO4. for topic: Hepatitis A Ab Reactive Many major trials have enrolled patients with low LVEF ≤ 35%–40% (so-called heart failure with reduced ejection fraction or HF-REF). Why is My Dog Lymph Node Swollen. Bleach isn’t recommended, but I don’t know why. Thus HF is a weak acid and HI is strong. of appropriate reactive gas mixture HF. The practical difference in station signal strength at worst will be only an S-point or so if good design and construction is adopted. Electronegativity is the tendency of an atom to attract a shared pair of electrons. At HF this "matched" why is that so bad? Well, your range Reactive metal is a group of metal elements that can form a reaction with acids, water, mineral acids and powerful oxidizing acids. for topic: Hepatitis A Reactive Means In some cases, your toes or fingers might become so swollen that they resemble sausages. C-reactive protein (CRP) is produced by the liver . Pyridine/HF and triethylamine/HF So, being proactive means being able to anticipate what the future will be, and to react accordingly before it actually happens. It may also etch the beaker or any other container through time so you don't want to store $\ce{HF}$ for a long time in glass containers, actually same with bases to a lesser degree. Alkali metals such as Sodium are highly reactive because the outer most electron is the only electron in the valence shell which can be easily donated in order to obtain a stable octet. So, just look at its horizontal position in the table and see that carbon is in the middle, hence, 'average'. He also insists that HF is the most reactive acid (I questioned this) but I So my questions are in regard to HCl and HF (I used HCl my strong Why is HF a weak acid. Glass surface are slightly basic due to the presence of silicates, so the acid will slowly react With surface and etch it - potentially over lengthy time period reducing its thikness. Reactive Species Generated during Wet Chemical Etching of Silicon in HF/HNO 3 Mixtures Marco Steinert , Jörg Acker * , Matthias Krause † , Steffen Oswald , and Klaus Wetzig Leibniz Institute for Solid State and Material Research Dresden (IFW Dresden), P. When you ask why flourine doesn't just take an electron from hydrogen and ionize, things get a bit more complicated. com/questions/1977/why-isWhy is hydrofluoric acid so dangerous if it is a weak acid? Symptoms of exposure to hydrofluoric acid may not be immediately evident. So, $\ce{HI}$ is more acidic than $\ce{HF}$. So, $\ce{HI}$ is more acidic than $\ce{HF}$. The Canon HF G20 is a top performer in low light situations and it even exceeds the G10. Although sulfuric acid is a strong electrolyte, an aqueous solution of H2SO4 contains more HSO4- ions than SO42- ions. The physical and chemical characteristics of metals, semi-metals and non-metals are discussed. Why is my skin so reactive? by Jennifer Brodeur September 20, 2017 Hydrofluoric Acid. Science. Fatty Reactive airway disease is not the same as reactive airways dysfunction syndrome (RADS). O. Why is Power Factor so Important? Written by: Andi The specifications of any electrical appliance working on AC supply, such as a refrigerator, a toaster, a fan, etc. Why are children with Reactive Attachment Disorder so impaired? Because the individual with RAD has difficulty connecting to others, their value system is often severely impaired. Sure, coming in contact with concentrate acids is always bad, but with HF its not only the acid burn: 1. Followers 0. Some thoughts on low cost, solid state, efficient, kilowatt-class HF linear amplifiers. What this terminology doesn't tell us about is the reactivity of the It's not so much that HF is corrosive, the danger from HF comes more from 8 Jun 2016 In essence what happens in the reaction is that you get: HF + H2O Fluoride is so incredibly reactive on its own that it will hold on tooth and Thus HF(aq) has a depressed pKa in water whilst its "real acidity" can be much higher. Why is gold less reactive than silver? so it doesn't have easily accessible d electrons or orbitals for reacting. I struggle with Reactive Hypoglycemia, i have been told to eat more protein, with me in my purse so if my meal was delayed I had something to tide me over. So if your results are not normal, your health care provider may order more tests to figure out why you have inflammation. Skin problems. C-reactive protein (CRP) is a blood test marker for inflammation in the body. This is the result of another characteristic of the Ionosphere. Sodium, like all the Group 1 metals, is very reactive because it wants to achieve what is called an inert gas electron configuration. So, $\ce{HI}$ is able to furnish $\ce{H+}$ ion faster than $\ce{HF}$. When we are reactive to another – it usually means we are communicating from a hurt we don’t want to feel . so this group was merged with the “decrease” group. The most reactive element on the Periodic Table, fluorine has a violent history in the quest for its discovery. From the list of nucleophiles given below, which one would you expect to be the most reactive? Fluorine is a toxic, reactive gas. $\ce{HF}$ is so reactive that it reacts with glass and has to be stored in HF is so nasty not because it is an acid, but because of the Fluoride ions and their properties. Buy products related to rabbit trap products and see what customers say about rabbit trap products on Amazon. HF ( Hydro-fluoric acid/ Hydrogen fluoride) is the reactive acid with pH of 3. 7 Doctor answers on Symptoms, Diagnosis, Treatment, and More: Dr. Why Is It So Hard to Plan for the Future? The Two Types of Psychopath. , list a minimum of three important parameters – Voltage, Wattage and PF. Why is HI more acidic than HCl? Update Cancel. What is the Periodic Table? What is a 'Group'? What is a 'Period'? The basic structure of the Periodic Table is described and explained. Definitions. Fluoride is SO reactive that even a little bit on your skin will begin attacking your body in very nasty ways. > It tells me to explain why in my science project. Bahrman ABB Inc. HF corrodes The difference in electronegativity means that the Hydrogen atom has little of the electron density and is easily removed or separated from the Florine creating a high concentration of free Hydrogen ions # H^+1# This makes Hydroflouric acids extremely reactive. Posted on December 8, 2015 November 6, 2017 by The Post Institute. Reference. Since fluorine is the most electronegative atom, why isn't HF a strong acid, too? The HCl bond should be less polarized than the HF bond. Dr. Thus, it is one of several proteins that are often referred to as acute phase reactants. To further explore why Hf + is so unreactive, a more quantitative characterization of the thermochemistry and a thorough exploration of the potential energy surface would be desirable. A reactive pan is one that contains metals that might interact with certain foods. Hydrogen fluoride is considered to be a weak acid at low concentrations, but it acts as a strong acid at high concentrations. Fluorine is the most reactive element known. C-Reactive Protein test to screen for heart disease: Why do we need another test? The predictive powers of a cholesterol test only go so far. Hydrofluoric acid is so corrosive because the fluorine ion is highly reactive. 27 ( 1 mM) among all acids. most stable is HF (ii Ironically, however, HF is actually more dangerous than strong acids! Unlike most acids, where damage is caused by the hydrogen ion, in HF, the fluoride ion is the damaging one. Stop Buying Meaningless Gifts. $\ce{HF}$ is so reactive that it reacts with glass and has to be stored in wax bottles. Nitrogen (N2) makes up almost 80% of our atmosphere, but it is an unreactive form that is not accessible to us. This colorless gas or liquid is the principal industrial source of Fluorine, often as an aqueous solution called Hydro-fluoric acid. She has taught science courses at the high school, college, and graduate levels. The production of oxygen based radicals is the bane to all aerobic species. C-reactive protein levels increase when there is inflammation in the body. Why is flourine so reactive?In its natural diatomic form(f2), both atoms have 8 valence electrons. C-reactive protein is an inflammation marker in the body. All Topics Topic Science Chemistry » Why is nitroglycerin so explosive? Why is it so violently reactive? Search this Question AHA Scientific Statement on Biomarkers in Heart Failure methods for biomarker measurement so that it can be utilized worldwide. That's why HF is so corrosive, but yet is classed as a weak acid. So, $\ce{HI}$ is able to furnish $\ce{H+}$ ion faster than $\ce{HF}$. First here is a link to an article that was given to us by our Chem prof. Aviation Human Factors Industry News. Because it is so reactive, fluorine is difficult to store. Why is hydrofluoric acid so dangerous if it is a weak acid? HF interferes with nerve function, meaning that burns may not initially be painful. The HF Bands – For HF Newcomers 4 The Skip Zone or Blind Zone Another point worth noting is something called the Skip Zone. fluorine is very reactive and iodine is small because it is much less so. Why is benzyne such a reactive molecule/why is it so unstable? (Is there any reason other than the fact that triple bonds are not stable within a 6-membered ring?) And despite it's instability why does diazonium salt decompose so rapidly to form benzyne? 25. the more stable-less reactive products H 2 S pK a = 7 HS pK b = 14 – pK a = 7 H 2 O pK a = 15. which representation (structural formula, electron dot structure, or three-dimensional model) would you use to explain why fluorine is so reactive, why? Abstract The reaction of atomic hafnium cations with CH4 and CD4 is studied using a guided ion beam tandem mass spectrometer. This colorless gas or Although hydrofluoric acid is regarded as a weak acid, it is very corrosive, even attacking glass when hydrated. Why for both (if you don't mind telling)? why is hydrogen iodide more reactive than hydrogen flouride - Chemistry - The reactivity of Halogen acids increases as we move from Hydrogen Fluoride to Hydrogen Get an answer for 'Why metals are highly reactive? Please, explain. Iron is easily found, mined and smelted, which is why it is so useful. There are no “medium acids” Reply; neloziioalex. Bromine on the other hand has 7 valence electrons, and being very electronegative, wants to accept an electron to s … atisfy its octet. 1. HF is less reactive due to the very strong bond between hydrogen and a halogen (Florine) which doesn't dissociates easily. Masson, et al. This sodium in it's metal form is highly explosive when it reacts with water. PARADIGM – HF demonstrated that Sacubitril/Valsartan reduces morbidity and mortality in patients with HFrEF compared to ACE-I/ARB therapy, so why is its adoption in the real world delayed? Sangaralingham et al. This group can be identified with the activity or reactivity series, which determines the most reactive metals from highest to lowest. Instead, accept that you made them, take whatever you can learn from them, let them go, and move on. Cycloheptatrienone is stable, but cyclopentadienone is so reactive that it can’t be isolated. Not Now. Why is fluorine so reactive? Chemistry The Periodic Table Metals and Nonmetals. Friedlander on hepatitis a reactive means: It means you're immune to hepatitis a, either from prior infection or vaccination. My interest in radio operations away from the QTH began a search for a Portable HF Antenna. HF Radar Antenna Principles 101 whose real part is 50 ohms and reactive (imaginary) part is zero. 2 …VOLTAGE SOURCE CONVERTER TRANSMISSION TECHNOLOGIES - THE RIGHT FIT FOR THE APPLICATION Michael P. Because no one can Why is my skin so reactive? by Jennifer Brodeur September 20, 2017 So, many doctors use another test called the C-reactive protein test to help figure out who’s at risk. com: What Is The Difference Between A Proactive And Reactive TNA? It’s irresponsible and can disrupt the lives of our reactive dogs that we work so hard to get to a point where they can leave a somewhat peaceful life. The typical age of onset is between 18-30 months (1 1/2 - 2 1/2 years). References Alibaba. Elevated c-reactive protein levels in the body may put you at risk for heart attack or stroke. All metals are reactive by definition, but two groups are Because it is so reactive, however, it’s going to be difficult to understand what it can do and what could cause extreme reactions that it already has with any amount of water. Why? 2. HF(aq) is a very reactive, weak acid. Government and private organisations are continually searching for the most flexible, reliable and cost effective solutions for their remote, emergency and HF Radar Antenna Principles 101 whose real part is 50 ohms and reactive (imaginary) part is zero. Transcript Why is Benzene so Unreactive to Addition Reactions so rapidly it is hard to stop at monofluorination of the ring. At HF this "matched" why is that so bad? Well, your range While a reactive dog 'can' be aggressive, he will only likely do so if placed in a situation where he feels that there is no escape. . Pure iron is soft and very malleable. What is it that prevents the reactive swimmer from doing so? It could be lack of information. How To Stop Being So Reactive All The Time. I’ve been doing the keto diet over the years. So, it seems that Francium is the most reactive element, alas theoretically. economy, but HF itself is a hazardous gas at room temperature and is very difficult to handle. Why is being reactive so much more common than being proactive? Because to be proactive you must have vision, having vision requires consideration, So, do these two methods of targeting PKG1α work equally well? Nakamura et al used a TAC murine model to demonstrate that the oxidative state of PKG1α determines whether or not sildenafil is efficacious in preventing pathologic remodeling in pressure-overload HF. However, it is Lithium fizzes gently, sodium fizzes vigorously, and potassium’s reaction is so energetic it bursts into a lilac flame as it zips across the water’s surface. Dangerously reactive liquids and solids can be extremely hazardous. CRP is classified as an acute phase reactant, which means that its levels will rise in response to inflammation. Why is hafnium so unreactive?: Experimental and theoretical studies of the reaction of Hf+ with methane Article in International Journal of Mass Spectrometry 254(3):168-182 · August 2006 with 20 High-Sensitivity C-Reactive Protein in Acute Heart Failure: Insights From the ASCEND-HF Trial. Recommended Posts. Aluminum, cast iron, and unlined copper are all examples of reactive metals. Like the loopstick, or indeed any small antenna, as size goes down, so does operating bandwidth. Hunt on hepatitis a ab reactive: You had an infection of Hepatitis B and have cleared it and no longer are infectious. The bifluoride (FHF−) anion is stabilized by the very strong hydrogen–fluorine-hydrogen bond. September 19, 2016 jsummerfield8. C-reactive protein, or CRP, is produced by the liver as part of an inflammatory response. Why is Sodium so Reactive? ScienceC. What is the stronger acid, HF or HCl? 2. Causes and risk factors for reactive attachment disorder. Why is benzyne such a reactive molecule/why is it so unstable? (Is there any reason other than the fact that triple bonds are not stable within a 6-membered ring?) And despite it's instability why does diazonium salt decompose so rapidly to form benzyne? Larger atoms = more reactive. Watch. It is the most attractive and therefore most reactive non-metal element in its row. What this terminology doesn't tell us about is the reactivity of the It's not so much that HF is corrosive, the danger from HF comes more from Wikipedia has a nice summary of HF toxicity (see also the references . Hydrofluoric acid (HF), for example, is so corrosive it will dissolve glass. Why are the alkali and alkaline earth metals more reactive than other elements on the periodic table? WHY? Leaving Group is more reactive and is a better Nucleophile than the weaker base/nucleophile. That means a full outer electron shell or valence shell. Since we’ve defined unionR as liftA2 closer , so we just need it to turn out that closer == mappend and that closer is associative and has an identity element. Compared to its predecessor, there are no new game changing features in the Vixia HF G20 so forget about upgrading to the G20 if your G10 is still functional. Spoiler alert! You might have noticed that the two elements deemed to be the most reactive are winners only in their specific categories — metals and non-metals. C-reactive protein in heart failure. Thus, HF is a weak acid. Jun 8, 2016 In essence what happens in the reaction is that you get: HF + H2O Fluoride is so incredibly reactive on its own that it will hold on tooth and He also insists that HF is the most reactive acid (I questioned this) but I So my questions are in regard to HCl and HF (I used HCl my strong He writes that it is not uncommon that a wrist meter shows a very different . — I stained a LC pot so badly once that I wouldn’t use it because it was ugly, so I finally filled it with water, added a capful of bleach and let it sit overnight. It can't be washed off, as it is absorbed very rapidly. ? Hi, I am doing a past paper and have this question. The other halogens aren't as electronegative as fluorine, and so the bonds in HX are less polar. In contrast to most third-row transition metal ions, the dehydrogenation reaction to form HfCH2+ + H2 is endothermic. asked by Vineeth on September 7, 2011; Chemistry. Why Does My Dog Act Like Cujo? Understanding Leash Reactivity. Now, we can ask: What makes a good solid-state HF amp? Ester names are derived from the parent alcohol and the parent acid, where the latter may be organic or inorganic. Computers & Internet Website. Chlorine is a weaker oxidising agent than fluorine but a stronger one than bromine or iodine. in biomedical sciences and is a science writer, educator, and consultant. We see an increase in acid strength so H-F is the strongest acid out of these four. Should it not be stable?-You are right that diatomic fluorine satisfies the octet rule. Since HF requires more energy to break the H-F bond, it will not dissociate as easily as the others, and we know that stronger acids dissociate more easily, so HF cannot be as strong as the other halogen acids. After doing some research, he found that these butterflies had an interesting habit. If your LDL is low, your C-reactive protein may be a better sign of impending heart trouble. Ironically, however, HF is actually more dangerous than strong acids! Unlike most acids, where damage is caused by the hydrogen ion, in HF, the fluoride ion is the damaging one. In the present study, we investigate the reactions of Hf + with CH 4 and CD 4 over a wide range of kinetic energies such that several HfCH x + species are formed. As discussed before, the normal child treasures positive care, statements, and rewards so will model their behavior after their caregivers. At HF this "matched" why is that so bad? Well, your range Earlier it was at 40% and was considerably less reactive. Search the site GO. 4 so in these given acids H3PO4 gives 3H+(protons) so it is more acidic. Why is flourine so reactive? Sign in to follow this . Both are 100% chlorobutyl linings with no HF-reactive additives. Because Perchloric acid is so reactive, it is important to keep it stored separate from other chemicals, …Oxidative stress takes place since CRP stimulates certain vascular cells to synthesize reactive oxygen radicals more So it is unknown if higher CRP concentration is simply an epiphenomenon or one of the causes of atherosclerosis, or perhaps – both? T. Each atom is made up of a nucleus and a number of electrons that orbit the nucleus. Let's take a look at why proactive and reactive public relations are important, along with situational examples of each. Every time someone asks "why is this chemical so reactive", I always wonder what it means. Therefore, specific causes and risk factors as to why some children develop RAD while others do not is not conclusive. Free Radicals and Reactive Oxygen A radical (often, but unnecessarily called a free radical) is an atom or group of atoms that have one or more unpaired electrons. Factor 15, Heart Failure, HF is a weak acid, its not among the 7 strong acids. Which of the following is most acidic? HF, HCl, HClO4 or H3PO4? Follow . Even so, it is not a 'strong' acid I don’t have any experience with them to know if they’re reactive. So is VAR or Why is gold less reactive than silver? so it doesn't have easily accessible d electrons or orbitals for reacting. The volatility of the acid at ambient conditions is a chief concern. Halogens are reactive The reason that HF is such a strong [corrosive] acid is because the Flouride ion, F- is HIGHLY reactive. 2 So where’s the catch; if the small loop is such a good antenna why doesn’t everyone have one and dispense with their tall towers and traditional antennas? An explosive material, also called an explosive, is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by the production of light, heat, sound, and pressure. kyle. I have very reactive tinnitus. 18 people found this helpful The girl was not very reactive to my advances and pretty much ignored me and concentrated on other matters in her life. It can't be washed off, as it is absorbed very rapidly. Nope, HF is a medium acid ( 5% < alfa < 50%) Reply. Why HF is the weakest acid among HCl, HBr and HI though its electronegetivity is highest? So two reasons, bond breaking down easily and then subsequent stabilization of the resulting anion (called conjugate base). a d b y W i k i b u y. The fluoride ion is so reactive it pulls calcium out of the bones to form insoluble CaF 2 . A strong bond does not allow this acid to react easily. As more is found about this material, it’s entirely possible that something else could be done in the future. accessed data from OptumLabs Data Warehouse, a large database of de-identified medical and pharmacy claims. So what is the output impedance of a typical amplifier of this sort, and why? Like the loopstick, an antenna loaded with a high permittivity material will have a reactive impedance, though it will be capacitive rather than inductive. If the fluoride ion gets into the bloodstream, it can killl. This includes glass, so HF is stored in plastic containers. This is why acyl halides are more reactive in acyl substitution than carboxylic acids, and also why hydrochloric acid and hydrobromic acid are stronger acids than water. But you should SARAH GREEN: So I want to back up a little bit and talk about why is that first reaction so often the wrong one? Because it seems like it always is. Ironically, however, HF is actually more dangerous than strong acids! Unlike most acids, where damage is caused by the hydrogen ion, in HF, the fluoride ion is the damaging one. HF(aq) is a very reactive, Mar 5, 2018 HF is nasty stuff, but as acids go it is relatively weak. As you go down Group 1 the atoms become larger and the outer electron is further from the nucleus. WHY? Leaving Group is more reactive and is a better Nucleophile than the weaker base/nucleophile. Why does a dog become reactive? There are innumerable reasons why a dog might become reactive. And since acids are gauged on strength via how well they dissociate into H+ ions (and the anions), and because HF hardly dissociates, then HF is therefore a weak acid. So if you have a reactive dog, stay tuned! a) hi because the h-i bond length is large and hence the bond strength is very weak. 2. It makes ferrous sulfate when reacted with sulfuric acid. They have similar bond energies (H-Cl = 427 kJ/mol, O-H = 467 kJ/mol), so there should be easy to ionize both. So chances are, you may benefit at some In chemistry why is nitrogen not very reactive - trivia question /questions answer / answers Chlorine is intermediate in reactivity between fluorine and bromine, and is one of the most reactive elements. The Most Dangerous Acids in the World. Accidental or uncontrolled chemical reactions are important causes of severe personal injury and property damage. Why are some of the periodic table elements reactive? Question Date: 2005-05-30: Answer 1: This is a great question and a full answer would take a career in chemistry, but I'll try to give you a shorter answer. The term ‘skip’ has been misused so much that some folks are beginning to call this the Blind Zone. ) Explain the following: (a)Water exists as liquid while H2S exist as a gas (b)HF has higher boiling point than HCl (c)Ice has less density than water (d)Metals have bright luster . Allen Hoffmann, a former Scientific Glassblower, was forced to be in contact with HF as part of his work (and is now seeking Worker's Compensation for the damage it did to his body) notes that: Show transcribed image text HF is prepared by reacting CaF_2 with H_2SO_4: CaF_2(s) + H_2SO_4(l) rightarrow 2HF (g) + CaSO_4(s) HF can in turn be electrolyzed when dissolved in molten KF to produce fluorine gas: 2HF (l) rightarrow F_2(g) + H_2(g) Fluorine is extremely reactive, so it is typically sold as a 5. iiNoble gases have very low boiling pointsWhy iiiWhy is IClmoe reactive than I from CHEMISTRY CHM 1045 at Miami Dade College, Miami Technophile generations like mine are said to deplore email, preferring instead the immediacy of messenger-based apps, though why being available and reactive at all times is best is beyond me. FLUORINE is a poisonous pale yellow gaseous element found in Group VIIb (i. So, that sums up the two faces of sodium. Hydrogen bonds form between the + hydrogen on one HF molecule and a lone pair on the fluorine of another one. so it's possible that a high hs-CRP There are three reasons why it is necessary to manage reactive power and control voltage. The reason why LiAlH4 is so reactive is because it is unstable. Workers should not hesitate to ask for guidance from the Safety Committee before quenching an unfamiliar substance. MENU. Created with He also insists that HF is the most reactive acid (I questioned this) but I didn't tell him definately no. $\ce{HF}$ is so reactive that it reacts with glass and has to Corrosion works by the acid-base catalysis of the hydrolysis esters and amides. less selective. So, why is it so, good people of Yahoo? so calcium are very reactive because it belong to the Hydrofluoric acid or HF is an extremely corrosive acid. Why is flourine so reactive? By ed84c, February 8, 2004 in Inorganic Chemistry. So for today, why not stop and breathe deeply – if only for a brief moment. D. ' and find homework help for other Science questions at eNotes. Chemical properties. So potassium is more reactive than lithium because the outer electron of a potassiumatom is further from its nucleus thanthe outer electron of a lithium atom How to Study Reactive Intermediates. The chemical name for the compound with the formula Na(2)S is. Its level rises when there is C-reactive protein (CRP) is a protein that increases in the blood with inflammation and infection as well as following a heart attack, surgery, or trauma. DC is the direct precursor to DF. Even so, HF is safer and easier to transport and handle than pure fluorine. A brief history of the development of the concept of the Periodic Table is also given. Why Is Checking In So Important? 6 Ways to Reduce Chronic Pain. Helmenstine holds a Ph. Typical gases produced are: H 2, CH 4, H 2 S, NH 3, PH 3, HCN, HF, HCl, HF, HI, SO 2, and SO 3. Normally I stay around 40 carbs a day to maintain and less than 20 to lose. Prior to working with any water reactive chemicals you must identify which gas may be formed in case of exposure to water and learn the risks associated with this gas