Residual Entropy

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Tony Ong 3K
Posts: 63
Joined: Fri Sep 28, 2018 12:23 am

Residual Entropy

Postby Tony Ong 3K » Sun Mar 10, 2019 11:47 pm

Why does NO have greater residual entropy than BF3 at 0K???

Fanny Lee 2K
Posts: 73
Joined: Fri Sep 28, 2018 12:29 am

Re: Residual Entropy

Postby Fanny Lee 2K » Mon Mar 11, 2019 2:05 am

NO can pack as NO or ON which are clearly identifiable whereas the three F positions in BF3 cannot be distinguished.

KimGiang2F
Posts: 31
Joined: Fri Sep 28, 2018 12:19 am

Re: Residual Entropy

Postby KimGiang2F » Tue Mar 12, 2019 4:25 am

At 0 K, NO has a greater residual entropy than BF3 because NO can be oriented as both NO and ON; BF3, no matter how you rotate the molecule, will look the same, because the F's are symmetric around the B. Therefore, NO has higher residual entropy, because it takes upon more orientations.


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