Hello,(adsbygoogle = window.adsbygoogle || []).push({});

This is a question I've been working on out of blundell and blundell,

http://imageshack.us/a/img560/3342/entwopy.jpg [Broken]

The red box is my answers to the question which I am pretty sure are ok.

I am having trouble with the very last part of the question.

By the logic of the first part, the entropy would be the same with the VDW gas in both cases right (cases a and b)? Since entropy is a state variable.

But how can you find the change in temperature?

Thank you

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Entropy of gas expansion, isothermal/reversible vs irreversible (Joule), ideal vs VDW

**Physics Forums | Science Articles, Homework Help, Discussion**