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  4. Is hydrogen burned when it is produced?
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Is hydrogen burned when it is produced?

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Offline scientizscht (OP)

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Is hydrogen burned when it is produced?
« on: 23/07/2020 13:33:53 »
Hello

Is it the case that when hydrogen is produced via electrolysis, the oxygen present burns some of that hydrogen produced?

If yes, how is this managed in real applications?

Thanks!
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Offline alancalverd

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Re: Is hydrogen burned when it is produced?
« Reply #1 on: 23/07/2020 14:00:40 »
No.

If the electrolysis is done with direct current, the gases are evolved at  different electrodes.

If you use alternating current you will get a stoichiometric mixture of hydrogen and oxygen  sometimes known as Brown's Gas that is reasonably stable until triggered with a spark. It's an interesting substance that can be fed into  a blowpipe and burns to a colorless flame without additional oxygen, and can be used as a source of heat or motive to power in a confined space aas its only waste product is water.
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Offline Bored chemist

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Re: Is hydrogen burned when it is produced?
« Reply #2 on: 23/07/2020 14:37:40 »
To some small extent, there will be oxygen dissolved in the water.
It's rather hard to tell if that oxygen is reduced at the electrode or if it combines with hydrogen at the electrode.
The outcome is the same, you get slightly less hydrogen.
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