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Solubility Product

If the solubi...

Question

If the solubility of $A g_{2} C r O_{4}$ is $S$ mole/lit. Then its solubility product is:

S^{2}

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S^{3}

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4 S^{3}

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2 S^{3}

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Solution

The correct option is C $4 S^{3}$
$A g_{2} C r O_{4} (s) \Leftrightarrow 2 A g^{+} + C r O_{4}^{2 -}$
$2 S$ $S$

$K_{s p} = [A g^{+}]^{2} \times [C r O_{4}^{2 -}]$

$K_{s p} = (2 S)^{2} \times S = 4 S^{3}$

Hence, option C is correct.

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