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What is minimum concentration of `SO_(4)^(2-)` required to precipitate `BaSO_(4)` in solution containing `1 xx 10^(-4)` mole of `Ba^(2+)` ? (`K_(sp)` of `BaSO_(4) = 4 xx 10^(-10)`)A. `4xx10^(-10)M`B. `2xx10^(-10)M`C. `4xx10^(-6)M`D. `2xx10^(-3)M` |
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Answer» Correct Answer - C `underset(Conc.: )(BASO_(4))hArrunderset(1xx10^(-4))(Ba^(2+))+underset(s)(SO_(4)^(2-))` `K_(sp)=4xx10^(-10)` `4xx10^(10)=1xx10^(-4)xxs` `(s=4xx10^(-10))/(1xx10^(-4))=4xx10^(-6)M` |
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