How many moles of acidified FeSO_4 solution can be completely oxidised by one mole of KMnO_4 ?

MHT CET Chemistry question

How many moles of acidified solution can be completely oxidised by one mole of ?

Answer: (B)

MnO4- + 5Fe2+ + 8H+ gives Mn2+ + 5Fe3+ + 4H2O, so one mole of KMnO4 (5 electrons)

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Question ID VK-074354