Hydrogen Fuel Cell Practice Test

Oxygen is reduced to water at the cathode, consuming electrons and combining with protons transported through the membrane.

Hydrogen ions are reduced to hydrogen gas at the cathode, reversing electrolysis and releasing electrons to the circuit.

Carbon dioxide is reduced to methane at the cathode, storing energy as a fuel and increasing vehicle efficiency.

Water is reduced to hydroxide and hydrogen at the cathode, producing alkaline conditions and dissolving the membrane.