2011 Final Question 1C

Boltzmann Equation for Entropy:

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2011 Final Question 1C

Postby 704578485 » Thu Mar 10, 2016 12:32 pm

Why on question 1C of the 2011 final would NO have a greater residual entropy than BF3 at OK?

Bryan Lau 3H
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Joined: Fri Sep 25, 2015 3:00 am

Re: 2011 Final Question 1C

Postby Bryan Lau 3H » Thu Mar 10, 2016 12:55 pm

Because NO has 2 orientations: ON or NO, and oscillation between these two possible configurations contribute to higher residual entropy. BF3, on the other hand, has only 1 possible configuration. No matter how you rotate the trigonal planar, you'll get exactly the same configuration.

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