Verified Solution • 2025–26 Session
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QJEEM23Ch2401: JEE Main 2023 Chemistry - Class 12 JEEM23Ch2401 Solution: During the reaction of permanganate with thiosulphate, the…
During the reaction of permanganate with thiosulphate, the change in oxidation of manganese occurs by value of 3. Identify which of the below medium will favour the reaction.
Multiple Choice Options
- A aqueous neutral
- B both aqueous acidic and faintly alkaline
- C both aqueous acidic and neutral
- D aqueous acidic
Step-by-Step Verified Solution
In a neutral or weakly alkaline solution, permanganate ions are reduced to MnO₂, with a change in oxidation state from +7 to +4, which is a change of 3 units.
The balanced redox reaction is :
3MnO₄⁻ + 5S₂O₃²⁻ + 2H₂O → 3MnO₂ + 5SO₄²⁻ + 10OH⁻