## free expansion

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

inlovewithchemistry
Posts: 104
Joined: Fri Sep 28, 2018 12:19 am

### free expansion

can someone describe the characteristics of free expansion? Is it just that w=0, and therefore q and deltaU are zero? Thank you!

Sara Flynn 2C
Posts: 60
Joined: Fri Sep 28, 2018 12:23 am

### Re: free expansion

free expansion means that it is expanding into a vacuum and so there is no work being done because it does not have to push against any pressure from the outside.

Grace Kim 1J
Posts: 60
Joined: Fri Sep 28, 2018 12:18 am
Been upvoted: 1 time

### Re: free expansion

Free expansion, (expansion in a vacuum/expansion against zero external pressure), is when no work is expended (equal to 0) when a gas increases in volume because the pressure-volume work is reliant on the external pressure.

Hope this helped!