Adiabatic  [ENDORSED]

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Christy Lee 2H
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Adiabatic

Postby Christy Lee 2H » Thu Jan 18, 2018 4:04 pm

My TA mentioned this during discussion, but can someone explain what adiabatic means?

joycelee1A
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Re: Adiabatic

Postby joycelee1A » Thu Jan 18, 2018 4:05 pm

My TA mentioned it too. I'm not entirely sure, but my TA mentioned that it would be a closed system with no heat transfer.

Jasmine Wu 1L
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Re: Adiabatic

Postby Jasmine Wu 1L » Thu Jan 18, 2018 4:21 pm

An adiabatic process is a process in which energy is transferred by just work, not heat. Think of it as something that is thermally insulating.

Nicole Anisgard Parra 2H
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Re: Adiabatic

Postby Nicole Anisgard Parra 2H » Thu Jan 18, 2018 4:56 pm

Simple terms: In an adiabatic process, q (heat) is always equal to zero. Therefore, you can assume that if q is zero, then change in internal energy equals the work done by or on the system.

Chem_Mod
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Re: Adiabatic  [ENDORSED]

Postby Chem_Mod » Thu Jan 18, 2018 5:34 pm

All great answers.
Excellent online student collaboration!

I will be smiling in class again Friday. :-)

Mitch Walters
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Re: Adiabatic

Postby Mitch Walters » Thu Jan 18, 2018 6:03 pm

It would be a process where q=0 and w=some number.

Scout_2C
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Re: Adiabatic

Postby Scout_2C » Fri Jan 19, 2018 7:58 pm

Adiabatic is used to describe a system, where there is no heat transferred, and when no heat is transferred the total change in internal energy is equal to the work performed (U=w). It would also be a good idea to get familiar with Isobaric and Isometric, which are also other ways systems could be described, so for convenience, I defined them below:

Isometric (aka isochoric): is a system where there is no change in volume, and when the volume is constant there is no work being performed (w=0) and so deltaU=q. Think about a bomb calorimeter to explain this one.

Isobaric: a system where there is no change in pressure, and when the pressure doesn't change the amount of heat transferred is equal to the enthalpy (q=n deltaH) and so deltaU=n deltaH + w. *couldn't think of an example for this one, sorry*

Amelia Georgius 1K
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Re: Adiabatic

Postby Amelia Georgius 1K » Mon Jan 22, 2018 9:01 pm

An adiabatic process is one in which there is no heat transfer between a system and its surroundings.

Jessica_Singh_1J
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Re: Adiabatic

Postby Jessica_Singh_1J » Tue Jan 23, 2018 12:57 pm

It's also important to note that a system with adiabatic walls is not necessarily a closed system- energy can be transferred as work!


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