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K(SP) of BaSO(4) is 1.5xx10^(-9) . Calcu...

`K_(SP)` of `BaSO_(4)` is `1.5xx10^(-9)` . Calculate is solubility in: (a) Pure water, , (b) `0.10MBaCI_(2)`.

Text Solution

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In presence of 0.10 M `BaCl_(2)`, let S mol/litre `BaSO_(4)` is dissolved
`K_(SP)=[Ba^(2+)]" "[SO_(4)^(2-)]`
`1.5 xx 10^(-9) =(0.1+S) (S)`
`[(0.1S +S)]=0.1 as lt lt lt 0.1]`
`therefore S=1.5 xx 10^(-8) M`
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