Chemistry 0620 · IGCSE · Hydrogen–oxygen fuel cells

Hydrogen–oxygen fuel cells — practice question

Which equation shows a reaction that occurs in a fuel cell?

  • A$\text{C} + \text{O}_2 \rightarrow \text{CO}_2$
  • B$2\text{H}_2 + \text{O}_2 \rightarrow 2\text{H}_2\text{O}$
  • C$\text{CH}_4 + 2\text{O}_2 \rightarrow \text{CO}_2 + 2\text{H}_2\text{O}$
  • D$\text{C}_3\text{H}_8 + 5\text{O}_2 \rightarrow 3\text{CO}_2 + 4\text{H}_2\text{O}$

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