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affan4 | 09:46 Sun 21st Dec 2008 | Science
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what is the chemical reaction for electrolysis of water?
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Avatar Image chrisrob
2h20=2h2+02
14:32 Sun 21st Dec 2008
Avatar Image theprof
Yes, that's the final equation but the answer depends on the level of expected knowledge of the student. You may want this or not as the case may be:

At cathode: 4H2O + 4e- --> 4OH- + 2H2
At anode: 2H2O --> O2 + 4H+ + 4e-

Net reaction: 6H2O --> 4OH- + 4H+ + 2H2 + O2
Simplified to : 2H2O --> 2H2 + O2
16:10 Sun 21st Dec 2008
Avatar Image wildwood
How do we know that you two are not using some chemical code to tell each other an encrypted dirty joke?
21:48 Sun 21st Dec 2008
Avatar Image theprof
Damn, we've been rumbled!
23:51 Sun 21st Dec 2008

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