Technology1 min ago
Solid Hydrogen
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Where can get some?
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Skreecheeboy. Hydrogen will become a liquid before it becomes a solid. The exact temperature is said to be
-252.87 degrees celcius, but it must be pressurised. It is used in liquid form as rocket fuel.
http://en.wikipedia.org/wiki/Liquid_hydrogen
-252.87 degrees celcius, but it must be pressurised. It is used in liquid form as rocket fuel.
http://en.wikipedia.org/wiki/Liquid_hydrogen
Hydrogen in the gaseous phase liquefies at �252.9 degrees Celsius. The liquid phase changes to the solid phase at �259.3 degrees Celsius. Note that both of the figures quoted are for one atmosphere pressure.
In addition, between �269 degrees Celsius and �272 degrees Celsius, Hydrogen exists in a specific crystalline form with unusual properties.
HWKE, Skreecheeboy is fortunate in having a very learned chemistry teacher. Following the work of McGrady et al in the University of New Brunswick, it has since been shown that it is possible to convert gaseous Hydrogen to solid Hydrogen without it undergoing the liquid phase using specialised methods. Certain research papers on this subject are available via Ingenta etc. for those with access to university library databases online via the usual methods. I recently read a fascinating paper awaiting publication on this very subject by a fellow scientist at a certain government research facility.
Doin�t believe everything you read in Wikipedia. Wikipedia is an anathema to all professional scientists the world over. The concept that an information source should be allowed to be freely editable by users to include fact and fiction alike reduces the credibility of the source at a stroke, problems freely acknowledged by Wikipedia�s founder, Jimmy Wales. Furthermore, it is to be noted that the article cited acknowledges that sources and references are missing. .
Incidentally, the figures I�ve quoted above come from Patnaik�s �Handbook of Inorganic Chemicals�, a standard reference source for chemists worldwide. Hawley�s Condensed Chemical Dictionary provides the similar figures.
Potterfan3, we use solid Hydrogen for a number of research purposes. However, even for bona fide users, solid Hydrogen requires specialised storage, transportation and handling methods.
It's simply not viable.
In addition, between �269 degrees Celsius and �272 degrees Celsius, Hydrogen exists in a specific crystalline form with unusual properties.
HWKE, Skreecheeboy is fortunate in having a very learned chemistry teacher. Following the work of McGrady et al in the University of New Brunswick, it has since been shown that it is possible to convert gaseous Hydrogen to solid Hydrogen without it undergoing the liquid phase using specialised methods. Certain research papers on this subject are available via Ingenta etc. for those with access to university library databases online via the usual methods. I recently read a fascinating paper awaiting publication on this very subject by a fellow scientist at a certain government research facility.
Doin�t believe everything you read in Wikipedia. Wikipedia is an anathema to all professional scientists the world over. The concept that an information source should be allowed to be freely editable by users to include fact and fiction alike reduces the credibility of the source at a stroke, problems freely acknowledged by Wikipedia�s founder, Jimmy Wales. Furthermore, it is to be noted that the article cited acknowledges that sources and references are missing. .
Incidentally, the figures I�ve quoted above come from Patnaik�s �Handbook of Inorganic Chemicals�, a standard reference source for chemists worldwide. Hawley�s Condensed Chemical Dictionary provides the similar figures.
Potterfan3, we use solid Hydrogen for a number of research purposes. However, even for bona fide users, solid Hydrogen requires specialised storage, transportation and handling methods.
It's simply not viable.
The Prof
Please read the question I gave the answer to.
The question was NOT does it exist under laboratory conditions.
With the quote from the chemistry teacher to Skreecheeboy Hydrogen might not even become a liquid, it might become a solid at this temperature'
You will notice I gave the answer in terms of the question, rather than to score points by saying, yes it is possible to have momentary instances of solid hydrogen form on liquid helium etc. because it was not in my opinion when answering the question, what the poser of the question was asking.
Please read the question I gave the answer to.
The question was NOT does it exist under laboratory conditions.
With the quote from the chemistry teacher to Skreecheeboy Hydrogen might not even become a liquid, it might become a solid at this temperature'
You will notice I gave the answer in terms of the question, rather than to score points by saying, yes it is possible to have momentary instances of solid hydrogen form on liquid helium etc. because it was not in my opinion when answering the question, what the poser of the question was asking.
