Shown Below Are the Reactions Occurring in the Proton-Exchange Membrane

question 119

Multiple Choice

Shown below are the reactions occurring in the proton-exchange membrane (PEM) fuel cell. I.2 H₂(g) → 4 H⁺(aq) + 4 e^-
II.O₂(g) + 4 H⁺(aq) + 4 e^- → 2 H₂O(l)
Overall 2 H₂(g) + O₂(g) → 2 H₂O(l)
Which is the cathode reaction,and what is being oxidized in the overall reaction?

• A)I,H₂
• B)I,O₂
• C)II,H₂
• D)II,O₂

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