Chemistry 0620 · IGCSE · Hydrogen–oxygen fuel cells

Hydrogen–oxygen fuel cells — practice question

Which row correctly describes a hydrogen-oxygen fuel cell?

  • Achemical to electrical; $2\text{H}_2 + \text{O}_2 \rightarrow 2\text{H}_2\text{O}$
  • Bchemical to electrical; $2\text{H}_2\text{O} \rightarrow 2\text{H}_2 + \text{O}_2$
  • Celectrical to chemical; $2\text{H}_2 + \text{O}_2 \rightarrow 2\text{H}_2\text{O}$
  • Delectrical to chemical; $2\text{H}_2\text{O} \rightarrow 2\text{H}_2 + \text{O}_2$

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI