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Solution


Q.

The total change in the oxidation state of manganese involved in the reaction of KMnO4 and potassium iodide in the acidic medium is __________.  [2023]

Ans.

(5)

10 KI+2 KMnO4(7+)+8 H2SO4 ⟶ 

2 MnSO4(+2)+8 H2O+5 I2+6 K2SO4

Change in oxidation number of Mn =[(+7)-(+2)]=5