Question

# Potassium permanganate acts as an oxidising agent in acidic medium. The number of moles of potassium permanganate that will be needed to react with one mole of sulphide ions in acidic solution is

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Solution

## 2MnO4−+16H++5S2−⟶2Mn2++5S+8H2O For 5 moles of S, number of moles of potassium permanganate required = 2 For 1 moles of S, number of moles of potassium permanganate required = 2/5

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