9.13

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

Esin Gumustekin 2J
Posts: 57
Joined: Thu Jul 27, 2017 2:01 am

9.13

For 9.13, why does the answer key use Cv instead of Cp? In this problem the volume is not constant as it is being compressed so shouldn't we use Cp?

Naveed Zaman 1C
Posts: 62
Joined: Fri Sep 29, 2017 6:04 am
Been upvoted: 2 times

Re: 9.13

The answer key doesn't use C of any kind... Are you perhaps looking at the wrong problem?

Keliana Hui 2E
Posts: 82
Joined: Fri Sep 29, 2017 6:07 am

Re: 9.13

Why doesnt this problem use Cv or Cp, but uses the equation deltaS=n*R*ln(T2/T1)?

Esin Gumustekin 2J
Posts: 57
Joined: Thu Jul 27, 2017 2:01 am

Re: 9.13

Naveed Zaman 1C wrote:The answer key doesn't use C of any kind... Are you perhaps looking at the wrong problem?

This problem has an error in it so it is listed on Dr. Lavelle's website on the Solution Manual Errors Document. In this document, Cv is used.

Janine Chan 2K
Posts: 71
Joined: Fri Sep 29, 2017 6:04 am

Re: 9.13

The solution manual error says Cv but uses 5/2 R, which is the value for Cp. Maybe the doc has a typo too?

Dang Lam
Posts: 55
Joined: Thu Jul 27, 2017 2:01 am

Re: 9.13

there's an error in the solution manual. You should be using Cv :)

Keliana Hui 2E
Posts: 82
Joined: Fri Sep 29, 2017 6:07 am

Re: 9.13

so is there an error in the "Errors in Solution Manual" pdf?