Question

n-factors of $H_{3}P{O}_4,H_{3}P{O}_3$ and $H_{3}P{O}_2$ respectively are:

• A. 3, 2 and 1
• B. 1, 2 and 3
• C. 3, 3 and 2
• D. 3, 3 and 3

Answer 1

The correct option is A 3, 2 and 1


In case of acid n-factor is defined as the number of $H^{+}$ ions replaced by 1 mole of acid in a reaction.
So,
$H_{3}P{O}_4(n_f=3)$
$H_{3}P{O}_3(n_f=2)$
$H_{3}P{O}_2(n_f=1)$