So HI is stronger than HBr which is stronger than HCl which is stronger than HF. I don't understand one of the answers to my homework, isn't it easier for CH_3COOH to protonate? Always remember that monoprotic acids can only donate one acidic proton, not two as in the case of this acid.. For water, the concentration is actually calculated to be ~55.6 M, which would then give us a Ka = 1.8E-16, which means the pKa of water is 15.75. Relevance. When sulfuric acid is classified as a strong acid, students often assume that it loses both of its protons when it reacts with water. I don't know about HSO3- and H2SO3, but if you mean HSO4 and H2SO4, then the latter is stronger. conjugate base: SO42-19 Explain why AlCl3 is a Lewis acid. The acidity (pH) depends only on the molar concentration of the acid in solution. HCl and H2SO4 are both strong acids. In other words, these acidic protons were attached to the sulfate molecule. Although both of them have 2 oxygen atoms not combined with hydrogen and electronegativity of N… Which is stronger and why: HI and HF. The more polar a bond is, the easier it is to remove the proton or hydrogen from the acid. The question was worth 11 points and I got 8 points for it. Sort by. I answered HI is stronger than HF because of F's higher electronegativity. HF is corrosive because of its proton; it's corrosive to bones because of its fluoride. The strong bases are listed at the bottom right of the table and get weaker as we move to the top of the table. Although sulfuric acid is a strong electrolyte, an aqueous solution of H2SO4 contains more HSO4- ions than SO42- ions. It will easily split in comparision of HF. HF is weak because the fluorine atom does NOT want to dissociate and form H+ and F-. Favourite answer. However, only one of the H atoms in H2SO4 ionizes; the other is more tightly bound and does not contribute to acidity. Fluorine is highly electronegative, so the bond in HF is a polar covalent bond. 3. but why? The $\ce{Cl-}$ ion created in solution by the dissociation of $\ce{HCl}$ is a terrible base, making hydrochloric acid very strong. I understand it has to do with the electronegativity being higher, but if thats the case, why is HClO a stronger acid than HBrO? B) H2O. Suggest a reason why HF is a weak acid, whereas binary ... Test 3 April 15 Spring 2019, questions and answers - StuDocu. The hydrogen sulfate anion is a weak base also, but it is a better base then a $\ce{Cl-}$ ion, adding to its weakened acidity. c.One reason why HCl is a stronger acid than HF is that Cl is more electronegative than F. d. The acids HBr and HI both appear equally strong in water.e. save. Since the bond between HF is stronger than the bond between HCl , HCl will more completely dissociate which makes it a stronger acid . HF is called a weak acid, and yet it is very reactive. Thus the pH of both is the same if the molar concentration is the same. Also explain the hierarchy of rules to why they are in the specific order. HF + H*2O ⇌ F-+ H3*O + except that in the case of HF, the amount of dissociation is much much smaller. As a result, the equilibrium lies largely to the left, which is why we drew the reverse arrow longer than the forward arrow. ... H2SO4. Sulfuric acid (American / IUPAC spelling) or sulphuric acid (traditional / British spelling), also known as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with molecular formula H 2 SO 4.It is a colourless and viscous liquid that is miscible with water at all concentrations.. 2. report. Lets see which one is stronger. The hydrogen-fluorine bond is fairly strong, so very little of the acid dissociates when dissolved in water. Does HF dissolve in water? Why? Why is HCl a stronger acid than HF, even though fluorine is more electronegative than chlorine and presumably would pull the bonding electron pair away from the proton more strongly? But what can we say about the comparison of HNO3 with H2SO4? HI is a stronger acid than HF since iodine is less electornegative than fluorine. a.One reason why HCl is a stronger acid than HF is that Cl has a larger atomic radius than F. b.One reason why HCl is a stronger acid than HF is that the H-Cl bond is weaker than the H-F bond. However, these ions easily combine to get back HF and water molecules. Why is HF so strong? Then, is h2so4 a Monoprotic acid? Acid with values less than one are considered weak. New comments cannot be posted and votes cannot be cast. : HNO3 is stronger than HNO2, likewise H2SO4 is stronger than H2SO3. Explain the following observations: a. HNO3 is a stronger acid than HNO2 b. H2SO4 is a stronger acid than H2SeO4 c. ¬HI is a stronger acid than HCl. 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 … Re: Why HF is a weaker acid than HCl. Sulfuric acid is commonly used as an electrolyte in car batteries. There is no monoprotic acid.The starting acid, sulfuric acid (H2SO4), has two acidic protons. Why is H2SO3 a stronger acid than H2SeO3? www.chemistryconcept.com Sulfur is more electronegative than selenium. C) : NH3. 1. 100% Upvoted. Why is HF a weak acid and HCl a strong aci... | Clutch Prep. This makes it the stronger conjugate base. "HF IS [fully] dissociated [in aqueous solution] "but tight ion pairs, F^-....H(+)-OH2, unique to F^-, which is far better participant in H-bonding than Cl^-, Br^- or I^-, reduce the thermodynamic activity coefficient of H3O^+." It has little to do with whether the acid is weak or strong. The reason why HF is a weak acid is unique and not appreciated by most chemists (who often attribute it to the strong H-F bond). Subsequently, question is, is h2so4 a Diprotic acid? Strong acids are listed at the top left hand corner of the table and have Ka values >1 2. 2 Answers. Explain why the ionization constant ka, for HI is larger than the ionization constant HF As the size of I atom is larger than that of the F atom, H-I has lesser bond strength than HF. Hydrofluoric acid or HF is an extremely corrosive acid. Jan. Lv 7. As you can see, a shorter arrow points to the right, meaning only few HF molecules dissociate to produce hydronium and fluoride ions. Sulfuric acid, H2SO4, reacts with CaF2 according to: CaF2 + H2SO4 ---> CaSO4 + 2 HF What is the minimum amount, in g, of impure H2SO4 (which is 83.5% H2SO4 by mass) that would be required to produce 16.2 g of HF when reacted with excess CaF2 ? Chemistry. The fight is between HNO3 and H2SO4 for the kingdom of acids. Every other acid is a weak acid.Because there are only seven strong acids, it is easy to commit the list to memory. HF corrodes glass and HCl doesn't because silicon tetrafluoride is a more stable complex than the highly reactive silicon tetrachloride. Strong Acids and Strong Bases. 1 comment. This thread is archived. I had read that we can compare the strengths of different oxyacids by counting the number of oxygen atoms borne by them, e.g. HO- is a stronger base than F- because HF is a stronger acid than H2O, and the stronger the acid the weaker its conjugate base. The basicity trends increases as F->Cl>Br->I-,so if HF were to dissociate F- will spontaneously react with H+,whereas I- is relatively stable..thats how i think of it A strong acid has a weak conjugate base. 1. HF is weaker than HCl in water but stronger than HCl in glacial acetic acid A) HF. The term superacid was originally coined by James Bryant Conant in 1927 to describe acids that were stronger than conventional mineral acids. Why is CH2ClCOOH a stronger acid that CH3COOH? Choice a, H2S Since H2S is a weak acid, this means that it ionizes poorly, thus mostly remaining in the molecular form, with just a few molecules ionizing into HS- and H+. level 1. Based on this we could say that HNO2, CH3COOH, and H2CO3 are all stronger acids than water when dissolved in water, but we can't say that they are strong acids because the definition of a strong acid is one that completely dissociates in water. Why HI is stronger acid than HF? D) CH4. It Had More Oxygens To Weaken The H-O Bondc. Answer Save. Basically I knew which 1 was stronger but I utterly BSed the reason why. Media Portfolio. best. Diprotic acids, such as sulfuric acid (H 2 SO 4), carbonic acid (H 2 CO 3), hydrogen sulfide (H 2 S), chromic acid (H 2 CrO 4), and oxalic acid (H 2 C 2 O 4) have two acidic hydrogen atoms. Could . Subsequently, one may also ask, is sulfuric acid a Diprotic acid? Rank the following species in order of increasing acidity (weak to strong) H2SO4, NH3, H20, CH3OH, CH3COOH, HF, H30^+. HF is a weak acid, but very dangerous (you may hear it etches glass, that’s because the SiF bond is the strongest bond) HCl and the rest of them (HBr, HI) are all “strong acids” but HI is the strongest (see pKa’s below) Due to poor orbital overlap (Iodine is much larger than H, and therefore the electrons are not very well shared, which imparts an extremely ionic character to the molecule) Acids with a halogen atom (F or Cl) in the Chain are more acidic. 2 See answers nikitadnaz nikitadnaz Explanation: In HI iodine is less electronegative and it has large size. HClO4 is a stronger acid than H2SO4 because the chlorine (Cl) is more electronegative than sulfur (S). AngelaZ 1J Posts: 65 Joined: Fri Sep 28, 2018 7:23 am. C 2 H 6, C 2 H 2 , C 2 H 4. … Based only on its polarity, one might expect HF to be stronger than HCl. Because it is greater in H2SO4, H2SO4 will be the stronger acid. Question: H2SO4 Is A Stronger Acid Than H2SO3 Because: A. Of course I know that HI is stronger than HF. Click here👆to get an answer to your question ️ H2SO4 is a stronger acid than H2SO3 .If true enter 1, else enter 0. 0. The exact reason why it attacks glass I'm not really sure about. It Has More Oxygens To Stengthen The H-O Bondb. Why is HF a weaker acid than HCl. share. Top. Find an answer to your question Why H2So4 is stronger than HNo3? 3 years ago. Moreover, shoudnt H2CO3 be a strong … Thus, the H+ proton is less attracted to the iodide anion and more willing to be donated. … 8 Which of the following is the strongest acid? hide. This definition was refined by Ronald Gillespie in 1971, as any acid with an H 0 value lower than that of 100% sulfuric acid (−11.93, or roughly speaking, −12). For the best answers, search on this site https://shorturl.im/axxmD. 7 years ago. Therefore bonding between hydrogen and iodide is weaker. I thought HF was more Polar/Electronegative, so it would be a stronger Acid HF is indeed more polar than HCl, but the stability of the conjugate base is more imp when measuring the strength of acids. History. More polar a bond is, the H+ proton is less electronegative and has. The answers to my homework, is H2SO4 a Diprotic acid is commonly used as electrolyte. We say about the comparison of HNO3 with H2SO4 See answers nikitadnaz nikitadnaz:... Hi iodine is less attracted to the sulfate molecule is less electornegative than fluorine H 2, C H. Greater in H2SO4, H2SO4 will be the stronger acid than H2SO3 glass I 'm really. Oxyacids by counting the number of oxygen atoms borne by them, e.g two! And H2SO3, but if you mean HSO4 and H2SO4, then the latter is than! 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