Question

How many electrons are involved in oxidation by $KMn{O}_4$ in basic medium ?

• A. 1
• B. 2
• C. 5
• D. 3

Answer 1

Answer: (D)

In alkaline medium, $KMn{O}_4$ acts as an oxidising agent as follows $MN{O}_4^{-}+2H_{2}O+3e^{-}\to Mn{O}_2+$$O{H}^{-}$Thus three electrons per molecule of are involved