Question

How many faradays are required to reduce one mol of $\text{Mn}\text{O}_{4}¯\text{toM}\text{n}^{2 +} -$

• A. 1
• B. 2
• C. 3
• D. 5

Answer 1

Answer: (D)

5

Answer 2

8H+ + 5e– + MnO4– $\longrightarrow$ Mn+2 + 4H2O (1 mole)

5 mole e– = 5 Faraday.