Chem 2 Labs WS99 Postlab for Lab #404 LeChatelier's Principle (1) Write out the equilibrium-constant expression for the following (a) Pb(Cl)2 (s) <=> Pb2+ (aq) + 2Cl- (aq) (b) Al(OH)3 (s) <=> Al3+ (aq) + 3OH- (aq) (c) Al2(C2O4)3 (s) <=> Al3+ (aq) + 3C2O4- (aq) (2) Briefly explain in your own words what Le Chatelier's Principle is.