## Final Exam 2013 Question 1B

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

garrett_perozich
Posts: 15
Joined: Wed Sep 21, 2016 2:57 pm

### Final Exam 2013 Question 1B

For 1B, how would a student know to use Cv for step 2? I understand that you would either use Cv or Cp since the problem told you to treat it as an ideal gas, but what doesn't make sense to me is why you'd use Cv if they volume was not constant (it changes from 3.0 to 3.5L). Also, the pressure isn't constant, as the problem states. So how, exactly, were we supposed to know to use Cv?

Annie Duong 3L
Posts: 13
Joined: Fri Jul 15, 2016 3:00 am

### Re: Final Exam 2013 Question 1B

Return to “Entropy Changes Due to Changes in Volume and Temperature”

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