Question

what happens when H2 gas combines with O2 in the presence of an electric current? ​

Answer 1

Hey Mate..

2H2+O2---->2H20..

Hope it helped ❤️

Answer 2

H2 + O2→ H2O When electric current is passed, we get water as by product. This is basis of fuel cell. At the cathode, the electrons and the hydrogen ions combine with oxygen to make water, which then flows out of the cell A fuel cell takes in hydrogen and oxygen and produces electricity, with water and heat as by products