Payal posted an Question
September 29, 2020 • 22:27 pm 30 points
  • IIT JAM
  • Chemistry (CY)

Why is it essential to boil off h2s gas before precipitating group 3?

Why is it essential to boil off H2S gas before precipitating group 3?

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    Priyanshu kumar Best Answer

    Before precipitation of group III cations, the solution is boiled with cone, nitric acid. If H2S is not boiled off then it would react with HNO3 and would be oxidized to colloidal sulphur, which would interfere with further analysis.

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    Dinesh khalmaniya 1 best-answer

    Before precipitation of group III cations, the solution is boiled with cone, nitric acid. If H2S is not boiled off then it would react with HNO3 and would be oxidized to colloidal sulphur, which would interfere with further analysis.

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