Chemistry - Ionic Equilibrium Question with Solution | TestHub

Solid $\mathrm{Ba}{\left({\mathrm{NO}}_3\right)}_2$ is gradually dissolved in a $1.0\times 10^{-4}\mathrm{M}{\mathrm{Na}}_2{\mathrm{CO}}_3$ solution. At which concentration of ${\mathrm{Ba}}^{2+}$, precipitate of ${\mathrm{BaCO}}_3$ begins to form ? $(K_{sp}$ for ${\mathrm{BaCO}}_3=5.1\times 10^{-9})$