Chemistry, asked by shyamalihota, 2 months ago

Group II cations are precipitated by passing H2S gas through their solutions containing HCl.Give reason for it.

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Answered by chakladershreyasi

1

Answer:

H2S gas when passed through a solution of cations containing HCl precipitates the cations of second group of qualitative analysis but not those belonging to the fourth group. It is because: presence of HCl decreases the sulphide ion concentration. presence of HCl increases the sulphide ion concentration.

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