Entropy and Degeneracy


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Stella Lee 3C
Posts: 27
Joined: Fri Sep 25, 2015 3:00 am

Entropy and Degeneracy

Postby Stella Lee 3C » Wed Jan 20, 2016 5:18 pm

Regarding the entropy formula, S=nRln2, do we utilize this formula when the two volumes aren't given? But if we are give nthe two volumes, do we utilize S=nRln(V2/V1)?

Chiara R 1K
Posts: 22
Joined: Fri Sep 25, 2015 3:00 am

Re: Entropy and Degeneracy

Postby Chiara R 1K » Wed Jan 20, 2016 6:56 pm

I think the formula S=nRln2 applies for systems with a degeneracy of two (they can only be in 2 possible states). Otherwise, for given volume changes (and thus entropy changes) I think we use S=nRln(V2/V1) (although sometimes V2/V1 is equal to 2 so it ends up being S=nRln2!)

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