## isothermal

$\Delta U=q+w$

Jessica Wakefield 1H
Posts: 58
Joined: Thu Jul 27, 2017 3:00 am

### isothermal

What does it mean if an equation is isothermal? Is the deltaU definitely going to be 0 or is that only under certain conditions?

Riya Pathare 2E
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Joined: Sat Jul 22, 2017 3:01 am
Been upvoted: 1 time

### Re: isothermal

Isothermal equations means that the system does not lose or gain heat. Think of it being in an isolated container

Sarah Sharma 2J
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Joined: Fri Sep 29, 2017 7:05 am

### Re: isothermal

To agree with the statement above, isothermal is no exchange of heat or energy. Therefore, the temperature stays constant and Delta T should equal zero.

Lily Sperling 1E
Posts: 49
Joined: Tue Oct 10, 2017 7:14 am

### Re: isothermal

delta U would equal 0 because deltaU = (3/2)nR(deltaT), and since deltaT=0, deltaU is therefore also equal to zero.

Laura Riccardelli
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Joined: Fri Sep 29, 2017 7:04 am

### Re: isothermal

Also, since delta U is zero then we also know that q=-w.

Lily Guo 1D
Posts: 64
Joined: Fri Sep 29, 2017 7:03 am

### Re: isothermal

If an equation is isothermal, that means there is no heat transfer and therefore no change in temperature.