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Author Topic: what happens if we put potassium in liquid hydrogen...?  (Read 1202 times)

Offline taregg

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what happens if we put potassium in liquid hydrogen.....doest burn or explode. .


 

Offline taregg

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Re: what happens if we put potassium in liquid hydrogen...?
« Reply #1 on: 02/02/2016 19:09:27 »
example when potassium react with water........the potassium react violently with hydrogen and produse burning fire ....the hydrogen gas it will get out.....
 

Offline chiralSPO

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Re: what happens if we put potassium in liquid hydrogen...?
« Reply #2 on: 02/02/2016 19:20:36 »
I would imagine that it would react slowly to form potassium hydride (KH), if the potassium is clean(molten potassium reacts quickly with gaseous hydrogen to form KH). If the surface of the potassium is oxidized and covered in potassium superoxide it could well explode on contact with liquid hydrogen (or any other flammable liquid).

Potassium will react violently with liquids containing H+ ions, or that will easily produce them (like acids, water, methanol...) but this is very different from H2, which does not easily produce H+ ions.
 

Offline Bored chemist

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Re: what happens if we put potassium in liquid hydrogen...?
« Reply #3 on: 02/02/2016 19:52:29 »
what happens if we put potassium in liquid hydrogen.....doest burn or explode. .
It will get really cold.
And most chemical reactions get slower as the temperature drops.
Practically nothing would happen.
 

Offline chiralSPO

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Re: what happens if we put potassium in liquid hydrogen...?
« Reply #4 on: 02/02/2016 20:34:49 »
what happens if we put potassium in liquid hydrogen.....doest burn or explode. .
It will get really cold.
And most chemical reactions get slower as the temperature drops.
Practically nothing would happen.

Liquid hydrogen doesn't necessarily have to be cold, it could just be very high pressure... There are also plenty of reactions that still occur at cryogenic temperatures. But I agree, if the question is regarding reactions at 20 K (boiling point of hydrogen at 1 atm), I would not be surprised if nothing happened.
 

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Re: what happens if we put potassium in liquid hydrogen...?
« Reply #4 on: 02/02/2016 20:34:49 »

 

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