JEE Main Chemistry question
In neutral or faintly alkaline solution, 8 moles of permanganate anion quantitatively oxidise thiosulphate anions to produce moles of a sulphur-containing product. The magnitude of is .
Answer: 6
Solution
In neutral/faintly alkaline medium, permanganate is reduced to insoluble (, a 3-electron gain per Mn), while thiosulphate is oxidised all the way to sulphate ( per sulphur, an 8-electron loss per ) — not to tetrathionate, which
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