Chapter 13, Problem 9E

Among the solubility rules previously discussed is the statement: All chlorides are soluble except Hg₂Cl₂, AgCI, PbCl₂, and CuCl.

(a) Write the expression for the equilibrium constant for the reaction represented by the equation $\text{AgCI}\left(s\right)\rightleftharpoons {\text{Ag}}^{+}{\text{CI}}^{-}\left(aq\right)$. Is $K_c>1,<1$, or $\approx 1$? Explain your answer.

(b) Write the expression for the equilibrium constant for the reaction represented by the equation

${\text{Pb}}^{2+}\left(aq\right)+2{\text{CI}}^{-}\left(aq\right)\rightleftharpoons {\text{PbCI}}_2\left(s\right)$. Is $K_c>1,<1$, or $\approx 1$? Explain your answer.