The solubility of CaF2 is 2 × 10−4. Its solubilily product KSP is
2.0 x 10-4
4.0 x 10-3
8.0 x 10-12
3.2 x 10-11
Ksp for CaF2 = 4s3 = 4 × [2 × 10−4]3 = 3.2 × 10−11
The solubility product of a sparingly soluble salt A2B is 3.2×10−11. Its solubility in molL−1 is: