1.

The precipitateofsecond group sulphides qualitatative analysis is carried oud withhydrogen in the presence of hydrochloricacidbutnot with nitric acid .Explain.

Answer»

SOLUTION :The precipitate of second GROUP sulphidesin qualitative anlysis is CARRIED out with hydrogensulphide in THEPRESENCE of hydrochloride acid but not in mitricacid.
Nitric acid is a strongoxidisingagent and oxides `H_(2)S` into S, So it cannot be used in thereactioninvolvinghydrogensulphide


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