Question

In the reduction of $KMn{O}_4$ by warm acidified oxalic acid, the oxidation number of $Mn$ changes from

• A. + 4 to + 2
• B. + 6 to + 4
• C. + 7 to +2
• D. + 7 to + 4

Answer 1

Answer: (C)

So, oxidation number of $Mn$ changes in the above reaction from $+7$ to $+2$.