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Calcualte the solubility of M(2)X(3) in ...

Calcualte the solubility of `M_(2)X_(3)` in pure water, assuming that neither kind of ion reacts with `H_(2)O`. The solubility product of `M_(2)X_(3), K_(sp) = 1.1 xx 10^(-23)`.

Text Solution

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`A_(2)X_(3)` dissociates in water as :
`A_(2)X_(3) overset(aq)(hArr) underset(2S)(2A^(3+)) + underset(3S)(3x^(2-))`
`K_(sp) =(2S)^(2) xx(3S)^(3) = 108 S^(5)`
`S^(5) = (1.1 xx 10^(-23))/(108) =10 ^(-25)`
`S= (10^(-25))^(1//5) =1xx10^(-5) mol L^(-1)`
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