Chemistry - Ionic Equilibrium Question with Solution | TestHub

Here$\mathrm{N}{\mathrm{a}}_2\mathrm{H}\mathrm{P}{\mathrm{O}}_4$is an acid salt
$\mathrm{N}{\mathrm{a}}_2\mathrm{H}\mathrm{P}{\mathrm{O}}_4\to 2\mathrm{N}{\mathrm{a}}^{+}+\mathrm{H}\mathrm{P}{\mathrm{O}}_4^{2-}$
$\mathrm{H}\mathrm{P}{\mathrm{O}}_4^{2-}\stackrel{{\mathrm{H}}_2\mathrm{O}}{\to }{\mathrm{H}}_3{\mathrm{O}}^{+}+\mathrm{P}{\mathrm{O}}_3^{3-}$