Question

Calculate the molar solubility of copper(II) sulfide in each liquid or solution.

A) pure water

B) 0.27 M CuCl2

C) 0.23 M K2S

Answer 1

We need to have access to the solubility product [Ksp] value of the CuS to solve this question. Using the value of solubility product as 6 * 10-37 we will be solving the question.

In the second and the third part of the question we will be using the common ion effect.

Common in Effect - In presence of common ion in the solution coming from some other salt, the solubility of Cus will decrease. The concentration of common ion will remain same throughout the solution. In the common ion effect the molar solubility of the uncommon ion is taken as the molar solubility of Cus.