1.

When BaCl_(2) is added to an aqueous salt solution , a white ppt. is obtained . The anion amoung CO_(3)^(2-) , SO_(3)^(2-) and SO_(4)^(2-) that was present in the solution can be

Answer»

`CO_(3)^(2-)` but not any of the other two
`SO_(3)^(2-)` but not any of the other two
`SO_(4)^(2-)` but not any of the other two
any of them

SOLUTION :SINCE carbonate , SULPHITE and sulphate of Ba are insoluble is `H_(2)O` , therefore , when `BaCl_(2)` is added to the solutions of these anions , white PPT. is formed .
`BaCl_(2) + CO_(3)^(2-) or SO_(3)^(2-) or SO_(4)^(2-) to `
`(BaCO_(3) or BaSO_(4) or BaSO_(4))/("Insoluble in" H_(2)O) + 2 Cl^(-)`
Thus , any one of them may be present and hence option (d) is CORRECT .


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