9. Find the solubility (in mol/L) of lead chloride (PbCl2) at 25℃. (Ksp = 1.6×10-5 ) (A) 1.6×10-5 (B) 1.6×10-2 (C) 0.025 (D) 0.21 (E) 0.16

13. The value of the equilibrium constant K depends on I. the initial concentrations of the reactants. II. the initial concentrations of the products. III. the final concentrations of the reactants. IV. the final concentrations of the products. (A) I, II (B) II, III (C) III, IV (D) I (E) none of these