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For manganese(ii) hydroxide, the value of Ksp is 1.6 x 10-13. rnwhat is the concentration of manganese ion ( [mn +2] ) in arn saturated aqueous solution of manganese(ii) hydroxide rn after enough solid sodium hydroxide (naoh) has beenrnto raise the hydroxide ion concentration to 0.020 m ? rnrn Reaction: Mn(OH)2 (s) mn +2 (aq) + 2 oh -1 (aq)
Accepted Answer
The expression for $K_{sp}$ for this reaction is:
$K_{sp}= [Mn^{2+} ][OH^-]^2$.
Substituting the given values:
$1.6 times 10^{-13} = [Mn^{2+}] (0.020)^2$
Solving for $[Mn^{2+}]$:
$[Mn^{2+}] = frac{1.6 times 10^{-13}}{(0.020)^2} = boxed{4.0 times 10^{-10} M}$
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