free expansion

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

free expansion

Postby inlovewithchemistry » Tue Feb 12, 2019 1:40 am

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

Postby Sara Flynn 2C » Tue Feb 12, 2019 9:18 am

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
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Re: free expansion

Postby Grace Kim 1J » Tue Feb 12, 2019 11:34 am

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!


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