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.

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.

Which one of the following is a diprotic acid

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That isn't a legitimate assumption.

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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. For example, sulfuric acid, a strong acid, ionizes as follows:. This stepwise ionization process occurs for all polyprotic acids. Carbonic acid, H 2 CO 3 , is an example of a weak diprotic acid.

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.

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Summarizing the results of our calculations allows us to test the assumptions made generating these results. Banking Exams. Delhi Police MTS. This means that only a small fraction of the HS - ions formed in the first step go on to dissociate in the second step. Vizag Steel Junior Trainee. BSF RO. WB Police Sergeant. Delhi Police Driver. MH SET. Gujarat Police. Allahabad High Court RO. NVS Mess Helper. Which of the following elements occur freely in nature? AP TET. Karnataka SDA.

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

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