Which of the following statements are TRUE regarding the standard Hydrogen-Oxygen () fuel cell? — Electrochemistry Chemistry Question

💡 Solution & Explanation

Fuel cells convert chemical energy directly to electrical energy, avoiding the intermediate heat generation step, meaning they are not heat engines and are *not* subject to Carnot cycle limits (Option D is false). They produce $H_2O$ as a byproduct, and unlike standard batteries, they do not store reactants internally but require a continuous external feed of $H_2$ and $O_2$.