Question

Molarity of a given orthophosphoric acid solution is 3 M. It's normality is

• A. 9N
• B. 0.3 N
• C. 3 N
• D. 1 N

Answer 1

Answer: (A)

Orthophosphoric acid $(H_{3}P{O}_4)$ is a tribasic acid. $\because$ Normality $=Molarity\times basicity$ $\therefore$ Normality $=3M\times 3$ $=9N$