Reduction of the metal centre in aqueous perm | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) In neutral medium: $MnO_4^- + 2H_2O + 3e^- \rightarrow MnO_2 + 4OH^-$. This involves $3$ electrons. (Statement $A$ is correct, $B$ is incorrect).I

Vedclass · Accepted Answer

$A, C, D$

Vedclass · Answer

(A) In neutral medium: $MnO_4^- + 2H_2O + 3e^- \rightarrow MnO_2 + 4OH^-$. This involves $3$ electrons. (Statement $A$ is correct, $B$ is incorrect).In alkaline medium: $MnO_4^- + e^- \rightarrow MnO_4^{2-}$ followed by $MnO_4^{2-} + 2H_2O + 2e^- \rightarrow MnO_2 + 4OH^-$. The overall reaction is $MnO_4^- + 2H_2O + 3e^- \rightarrow MnO_2 + 4OH^-$. This involves $3$ electrons. (Statement $C$ is correct).In acidic medium: $MnO_4^- + 8H^+ + 5e^- \rightarrow Mn^{2+} + 4H_2O$. This involves $5$ electrons. (Statement $D$ is correct).Comparing with the options, the correct combination is $A, C, D$.

Reduction of the metal centre in aqueous permanganate ion involves the following processes:
$(A)$ $3$ electrons in neutral medium
$(B)$ $5$ electrons in neutral medium
$(C)$ $3$ electrons in alkaline medium
$(D)$ $5$ electrons in acidic medium
Which of the following combinations is correct?

Similar Questions

What is obtained when solutions of $KI$ and $CuSO_4$ are mixed?

In the reaction of gold with aqua regia,the oxidation state of Nitrogen changes from

Which of the following statements is incorrect for the auto-ionization reaction of ammonia?
$2NH_3 \rightleftharpoons NH_4^+ + NH_2^-$

Iodine is released when potassium iodide reacts with

The colour of an iodine solution is discharged by shaking it with an aqueous solution of:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Reduction of the metal centre in aqueous permanganate ion involves the following processes:$(A)$ $3$ electrons in neutral medium$(B)$ $5$ electrons in neutral medium$(C)$ $3$ electrons in alkaline medium$(D)$ $5$ electrons in acidic mediumWhich of the following combinations is correct?