A solution is ready by adding some solid PbCl2 to water as well as allowing the solid to come to equilibrium with the solution. Explain the equilibrium constant for the reaction below is Kc = 1.7x10^-5.
PbCl2 (s) -> Pb2+ (aq) +2 Cl- (aq)
Explain what is the equilibrium concentration of Pb2+ in the solution? Presume some of the solid is still present.