Chapter 17, Problem 119RQ

Interpretation Introduction

Interpretation:

The concentration of ${\text{Pb}}^{\text{2+}}{\text{,Br}}^{\text{-}}{\text{and I}}^{\text{-}}$ is to be calculated when they are in contact with both, ${\text{PbI}}_{\text{2}}$ and ${\text{PbBr}}_{\text{2}}$.

Concept Introduction:

The concentration of ions can be calculated basing on the concept of solubility product.

The solubility product constant $\left(K_{sp}\right)$ is the degree to which a compound dissociates in water. The $\left(K_{sp}\right)$ of a salt is the product of concentration in terms of the ions of the salt. The concentration of each ion in the solubility product is the measure of solubility of the ions in the solution.