Rotation of Polar Molecules in Dipole-Dipole Forces

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Aman Sankineni 2L
Posts: 103
Joined: Fri Aug 30, 2019 12:17 am

Rotation of Polar Molecules in Dipole-Dipole Forces

Postby Aman Sankineni 2L » Thu Nov 14, 2019 1:17 am

How does the rotation of various energy orientations work in dipole-dipole forces? Essentially, what does the explanation for figure 3F.5 mean?

Justin Vayakone 1C
Posts: 110
Joined: Sat Sep 07, 2019 12:19 am

Re: Rotation of Polar Molecules in Dipole-Dipole Forces

Postby Justin Vayakone 1C » Thu Nov 14, 2019 2:10 am

Alright, I'll pretty much paraphrase the paragraph above the figure. In the gas phase, molecules are rotating rapidly. An assumption you can make is that there is no net interaction between the molecules because the attraction between opposite charges are canceled by the repulsion of like charges. This isn't true though because the rotating molecules stay in the low energy orientation longer, creating a net attraction. Being lower in energy means more stability, so that is why molecules favor this state more.


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