## Chemistry and Chemical Reactivity (9th Edition)

$(b) [Ag^+]^2[C{O_3}^{2-}]$ is the correct answer.
1. Write the solubility equation of $Ag_2CO_3$ , and balance it: $Ag_2CO_3(s) \lt -- \gt Ag^+(aq) + C{O_3}^{2-}(aq)$ $1Ag_2CO_3(s) \lt -- \gt 2Ag^+(aq) + 1C{O_3}^{2-}(aq)$ 2. Now, write the $K_sp$ expression: - It will be the multiplication of the concentrations of the ions. $K_{sp} = [Ag^+][C{O_3}^{2-}]$ - Remember: the balance coefficient will be the exponent of the concentration: $K_{sp} = [Ag^+]^2[C{O_3}^{2-}]^1$ $K_{sp} = [Ag^+]^2[C{O_3}^{2-}]$