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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Definitions:

Viscous liquid

A thick and sticky fluid that has a high resistance to flow compared to a less viscous liquid.

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Nerve cells that transmit impulses from the spinal cord or brain to muscles or glands, enabling movements and actions.

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Minerals in the body that have an electric charge, such as sodium, potassium, and calcium, vital for various bodily functions including muscle contractions and the maintenance of fluid balance.

Nerve impulses

Bioelectric signals that transmit information along nerve fibers, facilitating communication within the nervous system.