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Residual Entropy

Posted: Sun Mar 10, 2019 11:47 pm
by Tony Ong 3K
Why does NO have greater residual entropy than BF3 at 0K???

Re: Residual Entropy

Posted: Mon Mar 11, 2019 2:05 am
by Fanny Lee 2K
NO can pack as NO or ON which are clearly identifiable whereas the three F positions in BF3 cannot be distinguished.

Re: Residual Entropy

Posted: Tue Mar 12, 2019 4:25 am
by KimGiang2F
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.