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Zero-loss Reaction?

Question asked by Mike Moran on Aug 28, 2018
Latest reply on Aug 30, 2018 by Mike Moran

I've always wondered: is the electrolysis of water into hydrogen and oxygen, and the reverse reaction, a zero loss reaction? For example, if one were to use a current to separate 1 liter of water into H2 and O2, and then react the gasses back into water, would there still be a liter of water, or somewhat less?

 

Assuming ideal conditions, eg a vacuum chamber, no contaminants in the water sample, etc.

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