Q. When 0.1 mol $MnO_4^{2-}$ is oxidised the quantity of electricity required to completely oxidise $MnO_4^{2-}$ to $MnO_4^-$ is :
A) 96500 C
B) 2 × 96500 C
C) 9650 C
D) 96.50 C
Explanation
[Solution] One electron per ion: 0.1 mol e⁻ = 0.1 × 96500 = 9650 C. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.