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AP EAMCET202422 May 2024Evening ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Which of the following reactions of KMnO ₄ occurs in acidic medium?

Options

  1. AOxidation of thiosulphate to sulphate
  2. BPrecipitation of sulphur from H ₂ ~S
  3. COxidation of iodide to iodate
  4. DOxidation of manganous salt to MnO ₂

Correct answer

B. Precipitation of sulphur from H ₂ ~S

Step-by-step solution

In acidic medium hydrogen sulphide is oxidsed, sulphur being precipitated aligned & H ₂ ~S 2 H ⁺+ S ²⁻ & 5 ~S ²⁻+2 MnO ₄⁻+16 H ⁺ 2 Mn ²⁺+8 H ₂ O +5 ~S aligned

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