Chapter 16, Problem 87AE

Interpretation Introduction

Interpretation: A $200.0\text{mL}$ sample of a saturated solution of ${\text{PbI}}_{\text{2}}$ is given to be allowed to evaporate until dry. The $K_{\text{sp}}$ value for ${\text{PbI}}_{\text{2}}$, if $240\text{mg}$ of solid ${\text{PbI}}_{\text{2}}$ was collected after the completion of the evaporation process is to be calculated.

Concept introduction: Solubility is defined as the maximum amount of solute that can dissolve at a certain amount of solvent at certain temperature. The solubility product, $K_{\text{sp}}$ is the equilibrium constant that is applied when salt partially dissolve in a solvent. The solubility product of dissociation of ${\text{A}}_x{\text{B}}_y$ is calculated by the formula,

$K_{\text{sp}}={\left[\text{A}\right]}^x{\left[\text{B}\right]}^y$