CH-1746

Hydrogen fuel cells

Chemistry · Secondary 4 · Hard · Hydrogen fuel cells

In a hydrogen fuel cell, hydrogen gas is oxidised at the anode to form water. The half‑equations are:
Anode:

2H_2 \rightarrow 4H^+ + 4e^-

Cathode:

O_2 + 4H^+ + 4e^- \rightarrow 2H_2O

What is the overall equation for the reaction in this fuel cell?

Loading problem…