Electrolysis of water, an energy cost.

 How much electrical energy via electrolysis would it take to create 1 litre of elemental hydrogen mixed with elemental oxygen, and how long would this take?
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ozoConnect With a Mentor Commented:
1 litre of hydrogen at STP is 1/22.4 moles.
the heat of fusion of water is 1436 cal/mole, while the heat of fusion of H2 is 28 cal/mole and O2 is 106.3 cal/mole, the difference is 1355 cal/mole, but you probably won't recover the energy of the O2 recombining
65 cal = 269.5 joules
2/22.4 moles of electrons is 3356 coulombs or 3356 amp seconds
craige1Author Commented:
please state what type of anode and cathode would work best and iff poss some litrature or journals on this subject.
Theoretical or practical?    

 There are considerable losses that are going to make the theoretical numbers kinda off the mark.

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