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Solubility Product

The correct r...

Question

The correct relation between $K_{s p}$ and solubility for the salt, $K A l (S O_{4})_{2}$ is:

A

4 s^{3}

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B

27 s^{4}

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C

108 s^{5}

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D

none of these

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Solution

The correct option is B $4 s^{3}$
$K s p = x^{x} y^{y} s^{(x + y)}$
$K A l (S O_{4})_{2} \Rightarrow (K A l) (S O_{4})_{4}$
$K s p = (1)^{1} (2)^{2} 5^{1 + 2} = 45^{3} = K s p$
hence Ans- 'A'

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