Question

Which compound is the most soluble? CuS, Ksp = 1.27 × 10-36 AgI, Ksp = 8.51 × 10-17 PbS, Ksp = 9.04 × 10-29 AgCl, Ksp = 1.77 × 10-10

Answer 1

AgCl, Ksp = 1.77×10⁻¹⁰

Step-by-step explanation:

The solubility product of a solid is the amount of solid dissociates into its respective ions in the solution.

According to the definition of solubility product:

The greater the Ksp, the more the solubility of the salt.

So, given that:

CuS , Ksp = 1.27×10⁻³⁶

AgI, Ksp = 8.51×10⁻¹⁷

PbS, Ksp = 9.04×10⁻²⁹

AgCl, Ksp = 1.77×10⁻¹⁰

The most soluble is the one which has the greatest value of Ksp. So, AgCl corresponds to the largest value of Ksp and it will be the most soluble.