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Tiffany Lin 2E
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Postby Tiffany Lin 2E » Tue Jan 19, 2016 5:23 pm

What is residual entropy? and how do we calculate it?

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Re: Entropy

Postby Chem_Mod » Tue Jan 19, 2016 5:30 pm

Residual entropy is the entropy that is still left when something is cooled all the way down to 0 K. Since there would be no more kinetic motion, the residual entropy is the disorder of positions. You will not need to calculate it but just understand conceptually (for example, an unsymmetric molecule has more residual entropy than a symmetric molecule)

Tiffany Jadidian_2I
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Re: Entropy

Postby Tiffany Jadidian_2I » Tue Jan 19, 2016 5:32 pm

Well, the "glossary definition" of residual entropy is:
The nonzero entropy t T=0 in certain systems, which is due to a surviving disorder in the orientation of molecules.

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Re: Entropy

Postby chemgal4L » Thu Jan 21, 2016 9:51 pm

What kind of problems require the use of residual entropy?

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