Question

A student measures the molar solubility of zinc sulfide in a water solution to be 4.32×10-13 M. Based on her data, the solubility product constant for this compound is

Answer 1

solubility of zinc sulfide (s) = 4.32*10^-13 M

ZnS(S) ------------> Zn^2+ (aq) + S^2- (aq)

                               s                   s

Ksp     = [Zn^2+][S^2-]

Ksp     = s*s

Ksp    = s^2

Ksp   = (4.32*10^-13)^2    = 1.86*10^-25   >>>>answer