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The precipitate of second group sulphide...

The precipitate of second group sulphide in qualitative analysis is carried out with hydrogen sulphide in the presence of hydrochloric acid but not in nitric acid. Explain.

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Precipitation of second group sulphides in qualitative analysis is carried out with H_(2)S in presence of HCl and nitric acid.Why?

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Which will liberate hydrogen on reacting with hydrochloric acid ?

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Asseration : The ionisation of hydrogen sulphide in water is low in the presence of hydrochloric acid. Reason : Hydrogen sulphide is a weak acid.

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