Chemistry 0620 · IGCSE · Hydrogen–oxygen fuel cells

Hydrogen–oxygen fuel cells — practice question

Which equation shows the overall reaction taking place in a hydrogen-oxygen fuel cell?

  • A$4H + O_2 \rightarrow 2H_2O$
  • B$2H_2 + O_2 \rightarrow 2H_2O$
  • C$H_2 + O_2 \rightarrow H_2O$
  • D$2H + O \rightarrow H_2O$

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