The Number of moles of KMnO4 that will be needed to react with one mole of sulphite ion in acidic solution is:
3/5
4/5
2/5
1
C.
2/5
5 moles of sulphite ion react with = 2 moles of MnO4- So, 1 mole of sulphate ion react with = 2/5 moles of MnO4-.
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The d-And-f-Block Elements
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