Isolated Systems.

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Daniel Yu 1E
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Joined: Sat Aug 24, 2019 12:15 am

Isolated Systems.

Postby Daniel Yu 1E » Sun Feb 16, 2020 10:04 pm

How would you calculate Delta H for an isolated system if q=w=0? Or will it always be 0?
What about for Delta S? If the system doesn't interact with its surroundings, will entropy increase?
What about for W, degeneracy?

Vincent Leong 2B
Posts: 207
Joined: Fri Aug 09, 2019 12:15 am

Re: Isolated Systems.

Postby Vincent Leong 2B » Sun Feb 16, 2020 10:09 pm

the delta U for an isolated system is 0

Posts: 101
Joined: Sat Jul 20, 2019 12:16 am

Re: Isolated Systems.

Postby chemboi » Sun Feb 16, 2020 10:13 pm

Delta S should remain zero I think. W depends on what you've got in your system :) unless you've got atoms at abs. zero, W is likely >0

Hussain Chharawalla 1G
Posts: 100
Joined: Sat Jul 20, 2019 12:15 am

Re: Isolated Systems.

Postby Hussain Chharawalla 1G » Sun Feb 16, 2020 10:36 pm

Be sure to not confuse this with the concept of isothermal which means U (internal energy change) is 0. But q and w do not have to be 0.

Your entropy or degeneracy would not change because the isolated system is not interracting with the surroundings in any way.

Natalie Benitez 1E
Posts: 100
Joined: Fri Aug 02, 2019 12:15 am

Re: Isolated Systems.

Postby Natalie Benitez 1E » Mon Feb 17, 2020 2:40 pm

How does one determine a system is isolated and what does that tell us about its volume and pressure?

Brian J Cheng 1I
Posts: 115
Joined: Thu Jul 11, 2019 12:15 am

Re: Isolated Systems.

Postby Brian J Cheng 1I » Mon Feb 17, 2020 4:20 pm

Isolated systems cannot exchange heat or matter with the surroundings. They are closed in nature meaning they have constant pressure and volume (unless otherwise stated).

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