Chemistry - Ionic Equilibrium Question with Solution | TestHub

Using the Gibbs energy change,$\mathrm{\Delta }\mathrm{G}°=+63.3\text{ kJ}$, for the following reaction,
$\mathrm{A}{\mathrm{g}}_2\mathrm{C}{\mathrm{O}}_3\to 2\mathrm{A}\mathrm{g}+\left(\mathrm{a}\mathrm{q}\right)+\mathrm{C}{\mathrm{O}}_3^{2-}\left(\mathrm{a}\mathrm{q}\right)$
the${\mathrm{K}}_{\mathrm{s}\mathrm{p}}$of$\mathrm{A}{\mathrm{g}}_2\mathrm{C}{\mathrm{O}}_3\left(\mathrm{s}\right)$in water at${25}^{\mathrm{o}}\mathrm{C}$is
($\mathrm{R}=8.314\text{ J }{\text{K}}^{-1}\mathrm{m}\mathrm{o}{\mathrm{l}}^{-1}$)$\left\{\text{Given:}{10}^{0.91}\cong 8\right\}$