First slide

Solubility product(KSP)

Question

If the solubility of Ca(OH)₂ is $\sqrt{3}$ , What is its solubility product ?

Moderate

A

3
B
$\sqrt{3}$
C

27
D
$12 \sqrt{3}$

Solution

$Ca (OH)_{2} (s) ⇌ Ca (OH)_{2} (aq) \to \underset{S}{{Ca}^{+ 2}} (aq) + \underset{2 S}{2 {OH}^{-}} (aq)$
$K_{sp} = S \times (2 S)^{2} = 4 S^{3} = 4 \times (\sqrt{3})^{3} = 12 \sqrt{3}$

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