Test for SO42- - Add HCl and then BaCl2. Forms a white precipitate., Test for Cl- - Add HNO3 and AgNO3. Forms a white precipitate., Test for Br- - Add HNO3 and AgNO3. Forms a cream precipitate., Test for I- - Add HNO3 and AgNO3. Forms a yellow precipitate., Test for CO32- - Add HCl and look for fizzing.,

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