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NEET 2007 Chemistry question

ChemistryRedox ReactionsNEET 2007

The number of moles of that will be needed to react with one mole of sulphite ion in acidic solution is:

Answer: (4)

Solution

In acidic medium is reduced to (change of 5 electrons per Mn) while is oxidised to (2 electrons per ion). Balanced reaction: Missing superscript or subscript argument2 \text{MnO}_4^-Missing superscript or subscript argument + 5 \text{SO}_3^{2-}$ + 6 H^+

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Question ID VK-089839