Irreversible, Adiabatic


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Eileen Si 1G
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Joined: Fri Aug 30, 2019 12:17 am

Irreversible, Adiabatic

Postby Eileen Si 1G » Sat Feb 15, 2020 1:29 am

What is the delta entropy of the surroundings and system during an irreversible expansion, and is it any different to an adiabatic system where q = 0?

Anthony Hatashita 4H
Posts: 103
Joined: Wed Sep 18, 2019 12:21 am

Re: Irreversible, Adiabatic

Postby Anthony Hatashita 4H » Sat Feb 15, 2020 3:05 am

For the surroundings it's 0, the system is W=-PDeltaV I believe. I'm not sure about the second part of your question though, sorry about that.

Lauren Tanaka 1A
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Joined: Sat Aug 17, 2019 12:18 am

Re: Irreversible, Adiabatic

Postby Lauren Tanaka 1A » Sat Feb 15, 2020 10:26 am

The delta S for an irreversible expansion means that the surroundings change in entropy is 0. In an adiabatic system the total heat would be 0. This doesn't necessarily mean the same for irreversible expansion.

Sydney Myers 4I
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Joined: Fri Aug 09, 2019 12:17 am

Re: Irreversible, Adiabatic

Postby Sydney Myers 4I » Sat Feb 15, 2020 12:22 pm

When the delta S is 0, it doesn't necessarily mean that there's no heat transfer, just that whatever heat is being transferred is being converted to work or being transferred elsewhere. In an adiabatic system, there is no heat transferred.

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