If the solubility product of CuS is 6 × 10–16, calculate the maximum molarity of CuS in aqueous solution.

If the solubility product of CuS is 6 × 10^–16, calculate the maximum molarity of CuS in aqueous solution.

Solution:

Solubility product of CuS, K_sp =6 × 10^–16

Let S is the solubility then  

Hence maximum molarity is 2.45 x 10 ^-8 mol L^-1