When H_(2)S gas is passed through the HCl containing aqueous solutions – InterviewSolution

1.	When H_(2)S gas is passed through the HCl containing aqueous solutions of CuCl_(2),HgCl_(2),BiCl_(3) and CoCl_(2), which does not precipiate out
Answer» `CuS` `HGS` `Bi_(2)S_(3)` `CoS` SOLUTION :COBALT sulphide does not ppt. out SECOND group.

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