Question

The solubility of silver chloride can be increased by dissolving it in a solution containing ammonia. agcl (s) ag+ (aq) + cl- (aq) k1 = 1.6 x 10-10 ag+ (aq) + 2nh3 (aq) ag(nh3)2+ (aq) k2 = 1.5 x 107 what is the value of the equilibrium constant for the overall reaction? agcl (s) + 2nh3 (aq) ag(nh3)2+ (aq) + cl- (aq) knet = ? question 14 options:
a.1.5 x 107

Answer 1

We know that to calculate for the equilibrium constant Knet for the overall reaction           
        AgCl(s) + 2NH3(aq) = Ag(NH3)2+(aq) + Cl-(aq)
we just get the product of the equilibrium constants of the equations                                    AgCl(s) = Ag+(aq) + Cl-(aq)                          K1 = 1.6 x 10-10                                         Ag+(aq) + 2NH3(aq) = Ag(NH3)2+(aq)         K2 = 1.5 x 107
                                                                                                                                                Knet = K1 * K2                                                                                                                          = (1.6 x 10-10)(1.5 x 107)                                                                                                  = 2.4 x 10-3