Which one of the following is a diprotic acid

The acid equilibrium problems discussed so far have focused on a family of xxxsorpresa known as monoprotic acids. There is usually a large difference in the ease with which these acids lose the first and second or second and third protons. When sulfuric acid is classified as a strong acid, students often assume that it loses both of its protons when it reacts with water.

Additional Information. Acetic acid is monoprotic acid due to its structure. The three hydrogen atoms attached to the carbon are in weak polar bonds. They do not ionize. Only the H bonded to the highly electronegative oxygen can be ionized. Last updated on Mar 31, In this year's recruitment cycle, a total of vacancies were released.

Which one of the following is a diprotic acid

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Acids are classified by the number of protons per molecule that they can give up in a reaction. Their reactions with water are:. Even though it contains four hydrogen atoms, acetic acid, CH 3 CO 2 H, is also monoprotic because only the hydrogen atom from the carboxyl group COOH reacts with bases:. Diprotic acids contain two ionizable hydrogen atoms per molecule; ionization of such acids occurs in two steps. The first ionization always takes place to a greater extent than the second ionization.

Which one of the following is a diprotic acid

The acid equilibrium problems discussed so far have focused on a family of compounds known as monoprotic acids. There is usually a large difference in the ease with which these acids lose the first and second or second and third protons. When sulfuric acid is classified as a strong acid, students often assume that it loses both of its protons when it reacts with water. That isn't a legitimate assumption. Sulfuric acid is a strong acid because K a for the loss of the first proton is much larger than 1. We therefore assume that essentially all the H 2 SO 4 molecules in an aqueous solution lose the first proton to form the HSO 4 - , or hydrogen sulfate, ion. The table below gives values of K a for some common polyprotic acids. The large difference between the values of K a for the sequential loss of protons by a polyprotic acid is important because it means we can assume that these acids dissociate one step at a time an assumption known as stepwise dissociation. Let's look at the consequence of the assumption that polyprotic acids lose protons one step at a time by examining the chemistry of a saturated solution of H 2 S in water. Hydrogen sulfide is the foul-smelling gas that gives rotten eggs their unpleasant odor.

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Q: Choose the correct phrase from the following. A: Option 3 is correct Cyclic amide are also referred to as lactams.

UP Police Assistant Operator. Because K a1 is so much larger than K a2 for this acid, we can work with the equilibrium expression for the first step without worrying about the second step for the moment. Bombay High Court Clerk. Maharashtra Forest Department Surveyor. Bihar Senior Secondary Teacher. RRB Staff Nurse. Punjab Police. Rajasthan SET. TS SET. UP Gram Panchayat Adhikari. Let's assume that this acid dissociates by steps and analyze the first step the most extensive reaction. Bihar Vidhan Sabha Office Attendant. KVS Librarian. Which gas is used for the preparation of soda water?