On reaction with dil. H_(2)SO_(4) which of the following salts will gi – InterviewSolution

1.	On reaction with dil. H_(2)SO_(4) which of the following salts will give out a gas that turns an acidified dichromate paper green?
Answer» `Na_(2)CO_(3)` `Na_(2)S` `ZnSO_(3)` FeS Solution :`Na_(2)S+H_(2)SO_(4) to Na_(2)SO_(4)+H_(2)S uarr`, `ZnSO_(3)+H_(2)SO_(4) to ZnSO_(4)+H_(2)O+SO_(2) uarr` `FeS+H_(2)SO_(4) to FeSO_(4)+H_(2)S uarr` `H_(2)S` and `SO_(2)` can REDUCE dichromate PAPER to green `Cr^(3+)`

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