Chemistry - Ionic Equilibrium Question with Solution | TestHub

${\text{CO}}_3^{2-}+{\text{ H}}_2{\text{PO}}_4^{-}\stackrel{}{\rightleftharpoons }{\text{HPO}}_4^{2-}+{\text{ HCO}}_3^{2- }\text{Kc}={10}^3$

Since the value of${\text{K}}_{\text{c}}$for this reaction is greater than 1, it means this reaction is favourable in forward direction. Therefore,$\mathrm{C}{\mathrm{O}}_3^{2-}$is the stronger conjugate base than$\mathrm{H}\mathrm{P}{\mathrm{O}}_4^{2-}$