Chapter 16, Problem 81AE

Interpretation Introduction

Interpretation:

The mass of $\text{Ca}{\left({\text{NO}}_{\text{3}}\right)}_{\text{2}}$ that must be added to $1.0\text{L}$ solution of $1.0\text{M}$ $\text{HF}$ to begin the precipitation of ${\text{CaF}}_{\text{2}}$ 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,

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