Question

How many Faradays of electricity are required for the given reaction to occur ? ${MnO4^{-} -> Mn^{2+}}$

• A. 5 F
• B. 3 F
• C. 1 F
• D. 7 F

Answer 1

Answer: (A)

5 F

Answer 2

${^{+7}MnO4^{-} -> Mn^{2+}}$ The reaction can be written as : ${MnO4^{-} -> Mn^{2+}}$ Hence, 5 moles of electrons or 5F of electricity are required for the given reaction.