## Residual Entropy

Volume: $\Delta S = nR\ln \frac{V_{2}}{V_{1}}$
Temperature: $\Delta S = nC\ln \frac{T_{2}}{T_{1}}$

Posts: 64
Joined: Fri Sep 28, 2018 12:26 am

### Residual Entropy

I know boltzman equation is S= k ln W, but when am I supposed to use S= R Ln W ( k times avogadro's number is R)?

Michael Torres 4I
Posts: 92
Joined: Thu May 10, 2018 3:00 am
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### Re: Residual Entropy

I haven't come across problems incorporating what you mentioned. Since the value of W is yielded by (number of available positions)^(number of particles), then I think it's fair to assume that you will be using the value of k rather than R. W is in terms of individual particles and so is k, so I think you'll be safe just using k in problems that require the usage of this equation.

Chris Dis3L
Posts: 45
Joined: Fri Sep 28, 2018 12:25 am

### Re: Residual Entropy

As I understand it, for the purposes of this course, S = k ln W should suffice. From the homework problems that I’ve seen, I haven’t used the second equation you mentioned.