Question

Dissociation of $H_{3}P{O}_4$ occurs in following stages

• A. $1$
• B. $2$
• C. $3$
• D. $4$

Answer 1

Answer: (C)

$H_{3}P{O}_4\rightleftharpoons H^{+}+H_{2}P{O}_4^{-}$
$H_{2}P{O}_4^{-}\rightleftharpoons H^{+}+HP{O}_4^{2-}$
$HP{O}_4^{2-}\rightleftharpoons H^{+}+P{O}_4^{3-}$