Question

Which of the following is dibasic acid

A)HCL
B)H3PO4
C)HNO3
D)H2SO4

Answer 1

Answer:

H2SO4

Explanation:

Sulphuric acid is a dibasic acid in nature as ot contains 2 hydrogen atoms which ionise in aqueous solution.

Answer 2

Among the following, dibasic acid is $\[{H_2}S{O_4}\]$.

Explanation:

• The basicity of acid is the number of hydrogen atoms present in the acid that can be replaced by a base.
• On the basis of basicity, acids can be monobasic, dibasic, tribasic, etc.
• A monobasic acid has only one replaceable hydrogen er molecule.
• A dibasic acid has two replaceable hydrogen atoms. It furnishes two hydrogen atoms per molecule in aqueous solutions.
• Among the given acids, $\[HCl\,and\,HN{O_3}\]$ have only one replaceable hydrogen atom. Therefore, they are monobasic acids.
• $\[{H_3}P{O_4}\]$ has three replaceable hydrogen atoms. Therefore, it is a tribasic acid.
• $\[{H_2}S{O_4}\]$ has only two replaceable hydrogen atoms. Therefore, it is a dibasic acid.