Quote:
Originally Posted by elhigh
Are you sure about that? When my brother and I cobbled together an electrolyzer out of a big aluminum pan, some wiring and a couple of Mason jars, it was the hydrogen that filled up first.
Granted that was about 30 years ago, so some of the laws of chemistry may have been repealed.
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I'm a bit rusty at this stuff, but I come up with a figure of about 11.2 liters per mole for 02 and 1.12 liters per mole for H. Since you have 2xH in H2O, you should have about 5x the volume of oxygen as you do Hydrogen.
Based on wikipedia values for atomic weight and density.
But then you read stuff like "one mole of dry gas at STP occupies 22.4 liters" so the hydrogen in H2O would take up twice the volume after electrolysis? I'm struggling to see how such a convenient conversion factor is even possible though.