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10-06-2008, 06:55 AM #1
why water in a vacuum chamber freeze.
Need explanation why water in a vacuum chamber at first boils and than freeze, I would appreciate if you can base your explanation on chart of enthalpy/pressure/temperature.
best regards
Tzur.
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10-06-2008, 07:02 AM #2
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Re: why water in a vacuum chamber freeze.
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10-06-2008, 07:06 AM #3
Re: why water in a vacuum chamber freeze.
Using the power of Google, instead of my brain, I found this...
http://www.newton.dep.anl.gov/askasc.../chem99558.htmBrian - Newton Abbot, Devon, UK
Retired March 2015
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10-06-2008, 02:19 PM #4
Re: why water in a vacuum chamber freeze.
OK, thanks both of you, according to that explanation I would expect that when water stops boiling its temp would stay steady at around 273k. According to my experience temperature of the solid ice decreasing more with the decreasing of pressure, I measured 245k; I'm looking for some relation between pressure and temperature.
Thanks,
Tzur.
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10-06-2008, 03:27 PM #5
Re: why water in a vacuum chamber freeze.
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