Question

Calculate the molar solubility of BaSO₄ in a solution containing 0.70M SO₄^2- ion.

_________ x 10 ^_______

Answer 1

from appendix we know the value of BaSO4 Ksp = 1.1 x10^-10

BaSO4 ------------------------> Ba+2 + SO4-2

                                           S              S

                                         S              0.70M

Ksp = [Ba+2][SO4-2]

1.1 x10^-10   = (S) (0.70)

S= 1.57 x 10^-10

molar solubilty of BaSO4 = S= 1.57 x 10^-10 M -----------------------------------(answer)