Given the following equilibria, calculate the concentration of each zinc species in a solution saturated with Zn(OH)2(s)

Question:

Given the following equilibria, calculate the concentration of each zinc species in a solution saturated with Zn(OH)2(s) and containing [OH-] at a fixed concentration of 3.2 × 10-7M.
Zn(OH)2(s) Ksp = 3 × 10-16
Zn(OH)+ β1 = 1 × 104
Zn(OH)2(aq) β2(aq) = 2 × 1010
Zn(OH) β3 = 8× 1013
Zn(OH) β4 = 3 × 1015