Question

a) what effect does the change in internuclear separation in a diatomic molecule due to its vibration (the binding energy curve is asymmetric) have on the rotational energy levels of molecule?

b)Explain why the separation between vibrational levels is somewhat smaller in an excited electronic state than in the ground electronic state. Explain the same effect for rotational states.

c)show the ratio number of molecules in rotational level r to the number in the r=0 level, in a sample at thermal equilibrium, is a maximum for the level specified by

r= (kTI/ h bar)^1/2 - 1/2

for HCl, what is the most populated level at 600 degree kelvin?

Answer 1

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