What systems go with what equations?

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Tai Metzger 3K
Posts: 103
Joined: Sat Aug 24, 2019 12:17 am

What systems go with what equations?

Postby Tai Metzger 3K » Wed Jan 29, 2020 2:33 pm

Can all the equations we have learned in class be used when dealing with any of the three types of thermodynamic systems? Thanks!

Chantel_2I
Posts: 109
Joined: Sat Sep 07, 2019 12:19 am

Re: What systems go with what equations?

Postby Chantel_2I » Wed Jan 29, 2020 2:35 pm

We use w=-P(delta V) only when pressure is constant. Otherwise, we use the integral from v1 to v2 of -P(ex) times the change in V.

Veronica_Lubera_2A
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Re: What systems go with what equations?

Postby Veronica_Lubera_2A » Wed Jan 29, 2020 3:12 pm

When the pressure is constant, you can also get DeltaU=DeltaH-P(Delta V) from the general formula DeltaU=q+w.


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