Question: The potential energy of the rotation of one CH3 group relative to its neighbour in ethane can be expressed as V( rp)= Vo cos 3rp.

The potential energy of the rotation of one CH3 group relative to its neighbour in ethane can be expressed as V( rp)= Vo cos 3rp. Show that for small displacements the motion of the group is harmonic and calculate the energy of excitation from v = 0 to v = 1. What do you expect to happen to the energy levels and wave functions as the excitation increases?

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Use the first two terms of the Taylor series expansion of cosine 9V0 36 20 2 V Vo1 ... View full answer

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