Question

Which of the following is a polyprotic acid?

• A. $H_{2}S{O}_4$
• B. $H_{2}C{O}_3$
• C. $H_2{C}_2{O}_4$
• D. All of the above.

Answer 1

The correct option is D All of the above.

Acids which contain more than one ionisable proton are known as polyprotic acid.
$H_{2}S{O}_4$ is diprotic as it has two ionizable hydrogen ion.
$H_{2}C{O}_3$ is dibasic as it has two ionizable hydrogen ion.
$H_2{C}_2{O}_4$ is dibasic as it has two ionizable hydrogen ion.