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A solution has a \( \mathrm{Mg}^{2+} \) concentration of \( 0.0010 \mathrm{~mol} / \mathrm{L} \). Will \( \mathrm{Mg}(\mathrm{OH})_{2} \) precipitate if the \( \mathrm{OH}^{-} \)concentration of the solution is \( \left[\mathrm{K}_{\mathrm{sp}}=1.2 \times 10^{-11}\right] \)
\( \mathrm{P} \)
(a) \( 10^{-5} \mathrm{~mol} / \mathrm{L} \)
(b) \( 10^{-3} \mathrm{~mol} / \mathrm{L} \) ?
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