Question

$H_{3}PO_{3}$ is:

• A. A dibasic acid
• B. A tribasic acid
• C. monobasic
• D. neutral

Answer 1

Answer: (A)

A dibasic acid

Answer 2

The structure of phosphorous acid $\left( H _{3} PO _{3}\right)$ is as follows : As it has $2-O H$ groups, hence it shows dibasic character.