Isothermal reversible expansion

isochoric/isometric:
isothermal:
isobaric:

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Reva Kakaria 1J
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Joined: Fri Sep 28, 2018 12:23 am
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Isothermal reversible expansion

Postby Reva Kakaria 1J » Mon Feb 04, 2019 2:54 pm

Could someone please explain why reversible expansion must be isothermic?

Kristen Kim 2K
Posts: 70
Joined: Fri Sep 28, 2018 12:16 am

Re: Isothermal reversible expansion

Postby Kristen Kim 2K » Mon Feb 04, 2019 3:19 pm

If the system is isothermal, that means that the system and surroundings do not exchange matter or energy between each other. This is the case for a reversible expansion because the temperature must be constant in order for the volume to fluctuate so that the pressure is kept constant.

Adam Vuilleumier 2K
Posts: 60
Joined: Fri Sep 28, 2018 12:27 am

Re: Isothermal reversible expansion

Postby Adam Vuilleumier 2K » Mon Feb 04, 2019 3:41 pm

At the end of class today, Dr. Lavelle said that the system's temperature is constant despite work being done because heat from the surroundings is being added. I didn't understand how the system could be isothermal then if there is heat exchange between the system and its surroundings.


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