Question:medium

H₂S gas when passed through a solution containing HCl precipitates cations of second group of qualitative analysis but not those of fourth group. It is because:

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Common ion effect controls selective precipitation.
Updated On: Mar 18, 2026
  • presence of HCl decreases sulphide ion concentration
  • solubility product of group II sulphides is more than that of group IV
  • presence of HCl increases sulphide ion concentration
  • sulphides of group IV cations are unstable
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The Correct Option is A

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