reidy2015
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preparation of hydrogen gas under pressure
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Loptr
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Yes? No? Maybe?
I honestly have no clue.
[Edited on 19-4-2015 by Loptr]
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HgDinis25
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Get into school. Do not study anything (very important part). Wait until the night before your exams. Add Sodium Hydroxide solution to aluminium.
There you go, making hydrogen under pressure...
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reidy2015
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Thanks 
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Magpie
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Covering zinc with H2SO4 is another way to generate hydrogen. Also there is electrolysis of water. Is there a preferred method for lab scale
hydrogenations at atmospheric pressure? Or is the choice simply a matter of convenience/economics?
The single most important condition for a successful synthesis is good mixing - Nicodem
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zed
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NaBH4 is probably the best. Unfortunately, the price has never come down enough to allow for wide popularity.
Just drip an NaBH4/H20 solution into acid, via a hypodermic needle inserted into a mercury-valve supplying a sealed system. Hydrogen is generated,
creates back pressure, and momentarily stops liquid flow until the H2 is consumed. Valve will feed automatically, until reaction eventually stops
absorbing hydrogen.
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