A) \[s\]
B) \[{{s}^{3}}\]
C) \[4{{s}^{3}}\]
D) none of these
Correct Answer: C
Solution :
\[\underset{s}{\mathop{Mg{{(OH)}_{2}}}}\,\underset{s}{\mathop{M{{g}^{+}}}}\,+\underset{2s}{\mathop{2O{{H}^{-}}}}\,\] \[{{K}_{sp}}Mg{{(OH)}_{2}}\underset{s}{\mathop{[M{{g}^{+}}]}}\,+\underset{\times {{(2s)}^{2}}}{\mathop{[2O{{H}^{-}}]}}\,\] \[{{K}_{sp}}=4{{s}^{3}}\]
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