When to use this equation


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sofiakavanaugh
Posts: 58
Joined: Thu Jul 13, 2017 3:00 am
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When to use this equation

Postby sofiakavanaugh » Sun Feb 11, 2018 9:28 pm

Hi,

I was wondering in what specific situations we would need to use w=-pdeltaV versus other work equations

Does the temperature need to be constant?

Thanks!

Nishma Chakraborty 1J
Posts: 51
Joined: Fri Sep 29, 2017 7:04 am

Re: When to use this equation

Postby Nishma Chakraborty 1J » Sun Feb 11, 2018 9:32 pm

Hey! We use W=-pdeltaV for expansion work questions, typically regarding gases! I don't think temperature has to be constant in order to use this equation. Hope this helps!

Katie Blann 1E
Posts: 29
Joined: Tue Nov 15, 2016 3:00 am

Re: When to use this equation

Postby Katie Blann 1E » Sun Feb 11, 2018 9:33 pm

In the practice midterm we used this equation when the pressure was constant.

Erica Nagase 1H
Posts: 30
Joined: Sat Jul 22, 2017 3:00 am

Re: When to use this equation

Postby Erica Nagase 1H » Mon Feb 12, 2018 1:35 pm

We use for irreversible conditions (constant P). We use for reversible conditions (P is not constant).


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