Question

In a battery, the following two oxidation-reduction reactions are taking place:
rxn A: Zn + 2 OH- -> ZnO + H2O + 2e-
rxn B: 2 MnO2 + H2O + 2e- -> Mn2O3 + 2 OH-
What is undergoing reduction?
A) Zn
B) ZnO
C) MnO2
D) H2O
E) OH-

Answer

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