Answer to Question #258205 in General Chemistry for Meg

Question

The Ksp of CaF2 is 4x10^-11. What is the maximum concentration of Ca2+ possible in a 0.10 M NaF solution?

Answer 1

Ksp = Ca²⁺ x (2F^-)²

4.0x10^-11 = Ca²⁺ x (2 x 0.1)²

4.0x10^-11 = Ca²⁺ x 0.2²

4.0x10^-11 = Ca²⁺ x 0.04

Ca²⁺ = 4.0x10^-11/0.04

= 1.0 x 10^-9