I wanted to reacquaint myself with molecular oxygen and came across this in wikipedia's entry:
"Oxygen gas can also be produced through electrolysis of water into molecular oxygen and hydrogen. DC electricity must be used: if AC is used, the gases in each limb consist of hydrogen and oxygen in the explosive ratio 2:1. Contrary to popular belief, the 2:1 ratio observed in the DC electrolysis of acidified water does not prove that the empirical formula of water is H2O unless certain assumptions are made about the molecular formulae of hydrogen and oxygen themselves."
and here I thought use of AC would generate steam. It may be the wikipedia entry is in error. I don't know.
The reason I was looking into it was I was wondering where the electrons were coming from in a hydrogen fuel cell when H2 is combined with atmospheric O2. If 2 molecules of each electrically neutral gas is combined to form 2 molecules of electrically neutral H2O molecule where are the electrons produced coming from?
Andy