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Sender: John Hoff <jthoff@sciborg.uwaterloo.ca>
Subject: WSN: enthalpy of adsorption 

Dear WSN subscribers,

I have a question for anyone who has some understanding of  the 
thermodynamics and statistical mechanics of adsorption.  Would you expect 
the enthalpy change for the adsorption of a nonpolar organic vapor (e.g. 
hexane) at the air-water interface to increase, decrease or be constant 
when water freezes?  Please give the reason(s) for your thinking.

Sincerely,

John Hoff