First slide

Solubility product(KSP)

Question

Solubility product is a measure of solubility of a sparingly soluble salt. Solubility product of $Cr {(OH)}_{3}$ is (S = Molar solubility)

Moderate

Solution

$\begin{array}{l} Cr {(OH)}_{3} \overset{}{⇌} \underset{S}{{Cr}^{+ 3}} + \underset{3 S}{3 {OH}^{-}} \\ K_{sp} = {(S)}^{1} {(3 S)}^{3} \\ = 27 S^{4} \end{array}$

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