Question

Number of electrons transferred in each case when $KMnO_4$ acts as an oxidising agent to give $MnO_2,Mn^{2+},Mn(OH)_3$ and $MnO^{2-}_4$ are repectively

• A. 3,5,4 and 1
• B. 4,3,1 and 5
• C. 1,3,4 and 5
• D. 5,4,3 and 1

Answer 1

Answer: (A)

3,5,4 and 1

Answer 2

$Mn ^{7+}+3 e^{-} \rightarrow Mn ^{4+}$ $Mn ^{7+}+5 e^{-} \rightarrow Mn ^{2+}$ $Mn ^{7+}+4 e^{-} \rightarrow Mn ^{3+}$ $Mn ^{7+}+e^{-} \rightarrow Mn ^{6+}$