Question

The reaction that takes place in a hydrogen-oxygen fuel cell is


2H2(g)+O2(g)⟶2?


Select the major product of the reaction and determine whether the reaction is exothermic or endothermic.



H2O2 , endothermic


H2O2 , exothermic


H2O , endothermic


H2O , exothermic

Answer 1

Answer:

H20; exothermic

Explanation:

A fuel cell is a device that converts chemical potential energy (energy stored in molecular bonds) into electrical energy. A PEM (Proton Exchange Membrane) cell uses hydrogen gas (H2) and oxygen gas (O2) as fuel. The products of the reaction in the cell are water, electricity, and heat.