ChemIONS

Consider following reactions: Cd^2+(aq) + S2O3^2-(aq) <==> Cd(S2O3)(aq); K1 = 8.3 x 10^3 CD(S2O3)(aq) + S2O3^2-(aq) <==> Cd(S2O3)2^2-)(aq); K2 = 2.5 x 10^2 What is the value for the equilibrium constant for the following reaction? Cd^2+(aq) + 2S2O3^2-(aq) <==> Cd(S2O3)^2-(aq) A.) 0.030 B.) 33 C.) 8.1 x 10^3 D.) 8.6 x 10^3 E.) 2.1 x 10^6