Question

The normality of $0.3$M phosphorus acid $\left(H_{3}P{O}_3\right)$ solution is:

• A. $0.1$
• B. $0.9$
• C. $0.3$
• D. $0.6$

Answer 1

The correct option is D $0.6$

Normality = molarity x basicity
Now, basicity of phosphoric acid, $H_{3}P{O}_3$ = 2
$\therefore$ Normality = 0.3 x 2
= 0.6