Re: settle a bet


Sorcerer wrote:

<snip>

Ok, I'll remember to call CO2 "Super-Critical Fluid" or SCF,
since I asked what it was called. I hope there aren't any other
compounds called "Super-Critical Fluid", it might get confusing.

Gird your mental loins for confusion, Androcles.

CO2 and any other material that exhibits a critical point in its phase
diagram is called a 'supercritical fluid' at temperatures above the
critical temperature and pressures above its critical pressure.
http://www.chem.leeds.ac.uk/People/CMR/whatarescf.html

http://en.wikipedia.org/wiki/Critical_point_(thermodynamics)
http://en.wikipedia.org/wiki/Critical_points_of_the_elements_(data_page)

Here is a device for measuring critical points of mixtures:
http://www.uni-oldenburg.de/tchemie/Exp_Cri.htm

Tom Davidson
Richmond, VA

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