\(\mathrm{M}(\mathrm{OH}) 2(\mathrm{~s})<->\mathrm{M}^{2+}(\mathrm{aq})+2 \mathrm{OH}^{-}(\mathrm{aq})\)
\(\mathrm{Ksp}=\left[\mathrm{M}^{2+}\right]\left[\mathrm{OH}^{-}\right]^{2}\)
1) Use the \(\mathrm{pH}\) to get the \(\mathrm{pOH}\)
\(14-10.26=3.74\)
2) Use the \(\mathrm{pOH}\) to get the \(\left[\mathrm{OH}^{-}\right]\)
\(\left[\mathrm{OH}^{-}\right]=10^{-} \mathrm{pOH}=10^{\wedge}-3.74=1.82 \times 10^{\wedge}-4\)
3) \(\left[\mathrm{M}^{2+}\right]\) is half the value of \(\left[\mathrm{OH}^{-}\right]\), therefore:
\(\left[\mathrm{M}^{2+}\right]=1.82 \times 10^{\wedge}-4\) divided by \(2=9.10 \times 10^{n}-5\)
4) Put values into Ksp expression
\(\mathrm{Ksp}=\left(9.10 \times 10^{n}-5\right)\left(1.82 \times 10^{n}-4\right)^{2}\)
\(\mathrm{Ksp}=3.01 \times 10^{\wedge}-12\)
At 22℃ an excess amount of a generic metal hydroxide M(OH)2 is mixed with pure water....
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