Question

$H_{3}P{O}_4$ is triprotic. Justify with equations.

Answer 1

$H_{3}P{O}_4$ it contains $3$ replaceable Hydrogen atoms $H_{3}P{O}_4$ is a tribasic acid. It combines with alkalies like NaOH to form three series of salts.
$H_{3}P{O}_4+NaOH\to \underset{SodiumDihydrogenphosphate}{Na{H}_{2}P{O}_4}+H_{2}O$
$H_{3}P{O}_4+2NaOH\to \underset{Disodiumhydrogen}{N{a}_{2}HP{O}_4}+2H_{2}O$
$H_{3}P{O}_4+3NaOH\to \underset{SodiumPhosphate}{N{a}_{3}P{O}_4}+3H_{2}O$.