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Q.

H2S is used to separate or precipitate few salts. How many of the following salts are precipitated in acidic medium among Zn+2, Cu+2, Hg+2, Cd+2, Mn+2

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answer is 3.

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Detailed Solution

H2S2O7, H2S2O8 & S3O9 does not contain S-S bonds Cu+2, Hg+2, Cd+2 form sulphides in acidic medium.

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H2S is used to separate or precipitate few salts. How many of the following salts are precipitated in acidic medium among Zn+2, Cu+2, Hg+2, Cd+2, Mn+2