Chemistry

Problem

Calculate the molar solubility of

\text{SrF}_2

in a

0.020\,\text{M}

NaF solution at 25 °C. The solubility–product constant is

K_{sp}=4.2\times10^{-9}

. a)

3.2\times10^{-3}\,\text{M}

1.1\times10^{-5}\,\text{M}

2.1\times10^{-7}\,\text{M}

1.0\times10^{-4}\,\text{M}