adiabatic processes


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Agustina Santa Cruz 2F
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adiabatic processes

Postby Agustina Santa Cruz 2F » Sun Feb 21, 2021 6:32 pm

In adiabatic processes is w=0?

LReedy_3C
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Re: adiabatic processes

Postby LReedy_3C » Sun Feb 21, 2021 6:36 pm

I know that Q=0, but I don't know if work can still be done in other means

Chanel Mao 3D
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Re: adiabatic processes

Postby Chanel Mao 3D » Sun Feb 21, 2021 6:44 pm

I don't think that work is necessarily always equal to 0 in an adiabatic process, but q=0 because there is no heat transferred.

Samantha Low 3D
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Re: adiabatic processes

Postby Samantha Low 3D » Sun Feb 21, 2021 6:47 pm

An adiabatic process means that no energy is transferred as heat, meaning that q=0. This does not mean that w=0. In an abiotic process, w can =0, but it can also be another value. Textbook problem 4B.9 illustrates this idea well. Hope this helps!

Mahnoor_Wani_1I
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Re: adiabatic processes

Postby Mahnoor_Wani_1I » Sun Feb 21, 2021 6:51 pm

I agree with the above post. Adiabatic just means there is no heat transfer between system and surroundings. So no heat is lost/gained. Only q(heat) is equal 0. For work we need to calculate to find its value. Work is only zero for isochoric (constant volume) system like bomb calorimeter

SamanthaTolentino 3D
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Re: adiabatic processes

Postby SamanthaTolentino 3D » Sun Feb 21, 2021 6:56 pm

In an adiabatic process, heat is not transferred therefore q=0. However, we do not know if w=0 because work is not solely dependent on heat.

Rose_Malki_3G
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Re: adiabatic processes

Postby Rose_Malki_3G » Sun Feb 21, 2021 6:56 pm

adiabatic process are when no heat is exchanged so q = 0

Christine Ma 3L
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Re: adiabatic processes

Postby Christine Ma 3L » Sun Feb 21, 2021 6:57 pm

Like mentioned above, adiabatic processes are just processes where there is no heat flow (ie. q=0), but work isn't necessarily equal to zero unless there is no work of expansion/compression or we know that the change in internal energy is zero (since ΔU=q+w).

dana hu 1B
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Re: adiabatic processes

Postby dana hu 1B » Sun Feb 21, 2021 7:01 pm

In adiabatic process occurs without transferring heat or mass between the system and its surroundings. Therefore Q is zero, with no heat gain or lost system. Unlike an isothermal process, an adiabatic process transfers energy to the surroundings only as work

Teti Omilana 1G
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Re: adiabatic processes

Postby Teti Omilana 1G » Sun Feb 21, 2021 7:01 pm

An adiabatic system has no heat flow so q=0.

Evelyn Silva 3J
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Re: adiabatic processes

Postby Evelyn Silva 3J » Sun Feb 21, 2021 7:01 pm

It doesn't necessarily mean that w=0. We know for sure that q=0 but there can still be work being done.

Jaden Kwon 3C
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Re: adiabatic processes

Postby Jaden Kwon 3C » Sun Feb 21, 2021 10:09 pm

In an adiabatic process q=0 but w doesn't have to equal 0. In fact, W = -deltaU because deltaU = q + w but since q = 0 then deltaU = -w, or w = -deltaU.

Ansh Patel 2I
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Re: adiabatic processes

Postby Ansh Patel 2I » Sun Feb 21, 2021 10:11 pm

Hi! Adiabatic processes are when no heat is exchanged, so q = 0; w doesn't necessarily equal 0.

Armen_Isayan_2L
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Re: adiabatic processes

Postby Armen_Isayan_2L » Sun Feb 21, 2021 10:14 pm

Hello! In an adiabatic process, it is apparent that there is no heat flow between the system and its surroundings, hence it is certain that q=0. However, it is not certain that w=0, because work is not equal to 0 unless the change in internal energy is equal to 0.

Bhuvan Kommineni 3L
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Re: adiabatic processes

Postby Bhuvan Kommineni 3L » Sun Feb 21, 2021 10:16 pm

ADiabatic means there is no heat transfer so q=0!

Uyen Trinh 3C
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Re: adiabatic processes

Postby Uyen Trinh 3C » Sun Feb 21, 2021 10:27 pm

You can refer to this post where we also discuss adiabatic processes.

https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=128&t=75500&sid=facb94670fd13b8a06a541aed81a4ee3

Joshua Chung 2D
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Re: adiabatic processes

Postby Joshua Chung 2D » Sun Feb 21, 2021 10:40 pm

No. Adiabatic processes have no heat transfer, so q=0 and delta U=w. Since w is the energy transferred through work rather than heat, w is not affected by whether or not a process is adiabatic.

Lauren Sarigumba 1K
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Re: adiabatic processes

Postby Lauren Sarigumba 1K » Sun Feb 21, 2021 10:50 pm

Adiabatic processes are when q=0, meaning no heat is transferred

Hannah Lechtzin 1K
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Re: adiabatic processes

Postby Hannah Lechtzin 1K » Sun Feb 21, 2021 10:53 pm

w is not necessarily 0 in an adiabatic process. q = 0 in these instances, but work can still occur. I hope this helps!


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