Wolfram - 13-10-2003 at 10:38
How much energy in J is needed to turn 1 liter of water to O2 and H2?
Thanx for your help
vulture - 13-10-2003 at 10:43
I'm not giving you the answer. Why not? This is not a please-solve-my-homework board.
Instead, I'm going to ask you how you thought to deal with this problem.
This is not my homework.
Wolfram - 13-10-2003 at 11:56
This is not my homework.
I would take the free energy of formation for h2o which is -237 kJ / mol and multiply with 55 mol which there are in one liter of water. The answer
inverted would be the amount of joule needed. I guess.
madscientist - 13-10-2003 at 18:44
You need to take in account the energy released when the products (H<sub>2</sub>, O<sub>2</sub>
are formed.
Marvin - 14-10-2003 at 03:35
No, standard heats of formation are relative to elements in their standard state.