Irreversible and Reversible

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104922499 1F
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Joined: Fri Sep 29, 2017 7:04 am

Irreversible and Reversible

Postby 104922499 1F » Sun Jan 21, 2018 7:43 pm

For test 1, will we need to know both irreversible and reversible or just one?

Michele 2C
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Re: Irreversible and Reversible

Postby Michele 2C » Sun Jan 21, 2018 7:59 pm

From what Lavelle has posted on his website, questions regarding the idea/concept of reversible and irreversible processes are fair game. He has explicitly said that calculations using w = - nRT ln(Vfinal/Vinitial) will not be on Test 1. However, I would highly suggest being able to explain to another person what the difference is between a reversible and irreversible process, and how they fit into the larger picture of Chapter 8. Hope this helps!

Clement Ng
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Re: Irreversible and Reversible

Postby Clement Ng » Sun Jan 21, 2018 8:00 pm

Questions about both reversible and irreversible have been on the homework, so it's safe to assume that they may be on the test.

104922499 1F
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Joined: Fri Sep 29, 2017 7:04 am

Re: Irreversible and Reversible

Postby 104922499 1F » Sun Jan 21, 2018 11:14 pm

reversible problems wont be on the test because that involves equation 4 on pg 266 and he said we dont need to worry about equation 4 for test 1

Veronica Rasmusen 2B
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Re: Irreversible and Reversible

Postby Veronica Rasmusen 2B » Mon Jan 22, 2018 11:35 pm

It would be a good idea to know the difference between irreversible and reversible reactions, but if it shows up on the test it will only be a conceptual question.

ClaireHW
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Re: Irreversible and Reversible

Postby ClaireHW » Wed Jan 24, 2018 1:07 pm

Just for clarification, can someone explain the key differences between irreversible and reversible reactions?

(Claire Woolson Dis 1K)

Adrian Lim 1G
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Re: Irreversible and Reversible

Postby Adrian Lim 1G » Wed Jan 24, 2018 4:52 pm

On his website, he also said under announcements that there will be no questions on isothermal or reversible expansion on test 1.

ZoeHahn1J
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Re: Irreversible and Reversible

Postby ZoeHahn1J » Wed Jan 24, 2018 5:01 pm

Replying to Claire:
Irreversible systems are characterized by being more spontaneous than reversible ones. For example, in the model of a piston with gases on either side, an irreversible system could be when the pressure on the inside is substantially larger than the pressure on the outside, so there is rapid gas expansion as the gas presses on the piston. However, in reversible systems, the pressure on the inside is continually infinitesimally larger to the pressure on the outside, so the gas expands very slowly, or the gas expands in a vacuum.


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