Calculate the Ksp of AgCN

Question

If the concentration of CN1- is found to be 1.4 x 10-6 mol/L in a saturated solution of

AgCN, what is the Ksp of AgCN?

Answer 1

Ksp expression for AgCN = [Ag⁺][CN^-]

Given that at equilibrium (saturation) [CN^-] = 1.4x10^-6 moles/l and that [Ag⁺] comes from the same dissolving salt in a 1:1 ratio, then Ksp = (1.4x10^-6)² = 1.96x10^-12