Chemistry

Problem

A solution initially contains

0.050\,\text{M}\,\text{Mg}^{2+}

. What minimum pH must be reached (at 25 °C) before Mg(OH)

_2

(s) just begins to precipitate? (

K_{sp}(\text{Mg(OH)}_2)=1.8\times10^{-11}

) a) 10.52 b) 9.28 c) 8.63 d) 8.98