Order the following solids ad from least to most soluble a C

Order the following solids (a-d) from least to most soluble:

a. CaF_2, Ksp = 4E-11

b.AgCl, Ksp = 1.6 E-10

c.Ag_2S, Ksp = 1.6 E-49

d.CuS, Ksp = 8.5E-45

Solution

To understand how to do this question, you need to understand exactly what Ksp means. Ksp stands for \"solubility product\" or \"solubility equilibrium\". It is the equilibrium constant for the reaction in which a solid salt dissolves to give its constituent ions in solution. It represents the ratio of products to reactants. Therefore, the larger it is, the more products there are, and the more soluble the compound is.

c.Ag_2S, Ksp = 1.6 E-49 least soluble

d.CuS, Ksp = 8.5E-45

a. CaF_2, Ksp = 4E-11

b.AgCl, Ksp = 1.6 E-10 most soluble