Calculate the solubility product Ksp, for BaSO4.

Question

The concentrations of barium and sulfate ions in a saturated aqueous solution of BaSO₄ are both 1.05 x 10^-5 M. Calculate the solubility product K_sp, for BaSO₄.

K_sp=?

Answer 1

BaSO₄(s) <==> Ba²⁺(aq) + SO₄^2-(aq)

Ksp = [Ba²⁺][SO₄^2-]

Ksp = (1.05x10^-5)(1.05x10^-5)

Ksp = 1.10x10^-10