Chemistry

Problem

For

\text{Al}_2\text{S}_3

at 25 °C,

K_{sp}=3.2\times10^{-13}

. What is the maximum mass of

\text{Al}_2\text{S}_3

(molar mass =

150\,\text{g}\,\text{mol}^{-1}

) that can dissolve in

250\,\text{mL}

of water to form a saturated solution at this temperature? a)

1.2\times10^{-1}\,\text{g}

4.6\times10^{-3}\,\text{g}

4.6\times10^{-2}\,\text{g}

8.3\times10^{-2}\,\text{g}