Practice question

Practice question

In a fuel cell, what is the cathode reaction?

Choose one · Correct answer highlighted

H₂ + 2OH⁻ → 2H₂O + 2e⁻ O₂ + 2H₂O + 4e⁻ → 4OH⁻ H₂ → 2H⁺ + 2e⁻ O₂ + 4H⁺ + 4e⁻ → 2H₂O Correct

Cathode: O₂ + 4H⁺ + 4e⁻ → 2H₂O .

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