Question

n-factor of ${\mathrm{KMnO}}_4$ in neutral medium is:

• A. 6
• B. 5
• C. 4
• D. 3

Answer 1

The correct option is D

3

The correct option is (D):-

Explanation for the correct answer:

Step 1: The reaction involved with ${\mathrm{KMnO}}_4$ in neutral medium.

$2{\mathrm{KMnO}}_4+{\mathrm{H}}_2\mathrm{O}\to 3\mathrm{KOH}+2{\mathrm{MnO}}_2$

Step 2: Finding the n-factor of ${\mathrm{KMnO}}_4$

As, ${\mathrm{KMnO}}_4$ will get oxidized in the neutral medium.

Hence, it will gain electrons.

So, from (+7 to +4), there would be gain of 3 electrons.

Therefore, the correct option is (D):- 3