Question

Which of the following is true about orthophosphorous acid?

• A. It is represented by $H_{3}P{O}_3$
• B. It has two $P-OH$ bonds
• C. It is prepared by hydrolysis of $P_2{O}_3$
• D. All of the above

Answer 1

The correct option is D All of the above

Orthophosphorous acid $\left(H_{3}P{O}_3\right)$ is prepared by the hydrolysis of $P_2{O}_3$.
$P_2{O}_3+3H_{2}O\to 2H_{3}P{O}_3$

Structure of $H_{3}P{O}_3$: