The solubility product of Mg(OH) at 25 °C is

CHEMISTRY · Single correct · AP · Chemistry · Acids and Bases · Acids and Bases

Problem

The solubility product of Mg(OH)

_2

at 25 °C is

K_{sp}=1.8\times10^{-11}

. What is the approximate molar solubility of Mg(OH)

_2

in a solution buffered and maintained at pH 12? (Assume activity coefficients are 1 and the pH remains constant as the solid dissolves.) (a)

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

(b)

1.8\times10^{-9}\,\text{M}

(c)

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

(d)

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