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JEE Main202315 Apr 2023Morning ShiftChemistryRedox ReactionsActual

The total change in the oxidation state of manganese involved in the reaction of KMnO 4 and potassium iodide in the acidic medium is ________.

Correct answer

0

Step-by-step solution

In the reaction of KMnO 4   and potassium iodide ( KI ) in an acidic medium, the KMnO 4   acts as an oxidizing agent, and the iodide ions ( I - ) in KI act as reducing agents. KMnO 4 + KI + H + ⟶ Mn + 2 + I 2 + H 2 O In KMnO 4 , the oxidation state of manganese is + 7 , which is the highest possible oxidation state for manganese in this compound. In the final product, MnSO 4 , the oxidation state of manganese is + 2 . Therefore, the total change in the oxidation state of manganese is: + 7 (initial)

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