Entropy

isochoric/isometric:
isothermal:
isobaric:

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Katherine Jordak 1H
Posts: 51
Joined: Fri Sep 29, 2017 7:05 am

Entropy

Postby Katherine Jordak 1H » Sun Feb 11, 2018 10:33 pm

How does being vibrationally active affect entropy? Why is there a difference in entropy for diatomic and monoatomic molecules and which one typically has more entropy?

Peri Bingham 1G
Posts: 50
Joined: Fri Sep 29, 2017 7:03 am

Re: Entropy

Postby Peri Bingham 1G » Sun Feb 11, 2018 10:50 pm

Being more vibrationally active causes a larger value of entropy. The larger or more complex the molecule, the larger the vibrational activity.

Abigail Yap 2K
Posts: 51
Joined: Fri Sep 29, 2017 7:07 am

Re: Entropy

Postby Abigail Yap 2K » Sun Feb 11, 2018 11:21 pm

The vibrational motion causes disorder, so entropy increases. Diatomic molecules would cause greater entropy because the dissolution of polyatomic molecules results in a greater number of particles than the dissolution of monatomic molecules.

Nathan Tu 2C
Posts: 46
Joined: Fri Sep 29, 2017 7:07 am

Re: Entropy

Postby Nathan Tu 2C » Sun Feb 11, 2018 11:50 pm

Increase in vibrations increases entropy because it increases the possible states that the individual atom can have.

604807557
Posts: 51
Joined: Wed Nov 16, 2016 3:02 am

Re: Entropy

Postby 604807557 » Sun Feb 11, 2018 11:55 pm

Vibration causes disorder which means an increase in entropy. Diatomic molecules would have greater entropy because the more complex the molecule the more entropy there is.

Yang Chen 2E
Posts: 36
Joined: Thu Jul 13, 2017 3:00 am

Re: Entropy

Postby Yang Chen 2E » Sun Feb 11, 2018 11:57 pm

Are we supposed to know how many energy states a "unit" of vibrational energy adds on?

Ya Gao
Posts: 52
Joined: Fri Sep 29, 2017 7:04 am
Been upvoted: 1 time

Re: Entropy

Postby Ya Gao » Mon Feb 12, 2018 12:00 am

Diatomic atoms have more entropy than monatomic molecules because there are more possible states to be occupied and the rotational and vibrational energy contribute to the greater entropy.


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