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

AgCl, Ksp = 1.77*10⁻¹⁰

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.