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Re: [Phys-l] Gibbs paradox (redux)



Sorry, replace "configurational entropy of the translational
states" with "translational entropy" in the message below. In
other words, ignore any conformational changes of the
globules, entropy of the water solvent, etc. Treat the
globules as hard spheres moving around in water.

---
Carl E Mungan, Assoc Prof of Physics 410-293-6680 (O) -3729
(F)
Naval Academy Stop 9c, 572C Holloway Rd, Annapolis MD 21402-
1363
mailto:mungan@usna.edu
http://usna.edu/Users/physics/mungan/

---- Original message ----
Date: Fri, 24 Jun 2011 21:41:15 -0400 (EDT)
From: Carl Mungan <mungan@usna.edu>
Subject: re: Gibbs paradox (redux)
To: <phys-l@carnot.physics.buffalo.edu>

Okay, one more time on this topic. Maybe now I'm getting
somewhere. We'll see.

Consider the system to be a glass of milk at room
temperature,
ie. a colloid.

(1) Would you agree that this system could be described as an
ideal gas of distinguishable particles?

(2) If so, what is a formula for its entropy? (Consider only
the configurational entropy of the translational states of
the
suspended fat globules.) Write your answer in terms of V,U,N
where U = 1.5 NkT. If V, U, and N are all doubled, does S
double?

---
Carl E Mungan, Assoc Prof of Physics 410-293-6680 (O) -3729
(F)
Naval Academy Stop 9c, 572C Holloway Rd, Annapolis MD 21402-
1363
mailto:mungan@usna.edu
http://usna.edu/Users/physics/mungan/