The overall formation constant for AgCN2 equals 55 x 1018 an

The overall formation constant for Ag(CN)₂^- equals 5.5 x 10¹⁸, and the K_spfor AgCN equals 6.0 x 10^-17. Calculate K_c for the reaction:

AgCN(s) + CN^-(aq) ? Ag(CN)₂^-(aq)

K_c =

Solution

3.3*10^2