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
Example: Solubility product of AgCl is:
- Ksp = [Ag+][Cl-]
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