Periodic Table of Elements

Solubility Product Ksp

Definition: The product of the concentrations of cation and anion in a saturated solution of a salt is called solubility product. Higher the Ksp value, solubility of the salt is more.

Ksp = [A+][B-] - if it is saturated solution
Ksp > [A+][B-] - if it is unsaturated solution
Ksp < [A+][B-] - if it is super saturated solution

Solubility product of AgCl is:

Ksp = [Ag+][Cl-]

Sample Calculations:

Calculate the value of Solubility Product Ksp if t solubility of AgCl in pure water is 1.3 x 10-5 M.

Ksp = [Ag+][Cl-] = [1.3 x 10-5 M][1.3 x 10-5 M] = 1.69 x 10-10