When BaCl2 is added to an aqueous salt solution, a white precipitate is obtained. The anion among CO2−3,SO2−3 and SO2−4 that was present in the solution can be:
A
CO2−3 but not any of the other two
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B
SO2−3 but not any of the other two
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C
SO2−4 but not any of the other two
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D
None of these
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Solution
The correct option is D None of these Ba2+ ion will form white ppt of either BaCO3 or BaSO3 or BaSO4. Ba2++CO2−3→BaCO3↓ Ba2++SO2−3→BaSO3↓ Ba2++SO2−4→BaSO4↓