Chapter 15, Problem 15.41CP

Interpretation Introduction

Interpretation:

The solution that would form a precipitate of solid ${\text{Ag}}_{\text{2}}{\text{CrO}}_{\text{4}}$ has to be predicted and explained.

Concept Introduction:

The formation of solid in a solution is known as precipitation.

Solubility product, ${\text{K}}_{\text{sp}}$ is defined as the concentration of ions in a saturated solution where each ion is raised to the power of their coefficients.  Ion product, $\text{Q}$ is defined as the initial concentration of ions in any solution where each ion is raised to the power of their coefficients.

The relation between ion product, $\text{IP}$ and solubility product, ${\text{K}}_{\text{sp}}$ is as follows.

• If ${\text{IP>K}}_{\text{sp}},$ the solution is supersaturated and precipitate will occur.
• If ${\text{IP<K}}_{\text{sp}},$ then precipitate will not form and the solution is saturated
• If ${\text{IP=K}}_{\text{sp}},$ then the solution will be unsaturation and the formation of precipitate doesn’t take place