Entropy

[Tiffany Lin 2E]

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

[Chem_Mod]

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]

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.

[chemgal4L]

What kind of problems require the use of residual entropy?