Multiple Choice
The half-reaction occurring at the cathode in the balanced reaction shown below is __________. 3MnO4- (aq) + 24H+ (aq) + 5Fe (s) → 3Mn2+ (aq) + 5Fe3+ (aq) + 12H2O (l)
A) MnO4- (aq) + 8H+ (aq) + 5e- → Mn2+ (aq) + 4H2O (l)
B) 2MnO4- (aq) + 12H+ (aq) + 6e- → 2Mn2+ (aq) + 3H2O (l)
C) Fe (s) → Fe3+ (aq) + 3e-
D) Fe (s) → Fe2+ (aq) + 2e-
E) Fe2+ (aq) → Fe3+ (aq) + e-
Correct Answer:

Verified
Correct Answer:
Verified
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