For a diatomic gas phase molecule, the rotational energy is
given by the expression:
Ej = Be J(J+1)
where J is the rotational quantum number, and Be is
the rotational constant. The degeneracy for rotational states is
given by:
g(J) = 2J+1
The normalization constant (total rotational partition function)
for the Boltmann distribution for rotations is given by:
Q(J,T) = kBT / Be
Iodine, I2(g), has a rotational constant of
Be = 0.037372 cm-1. Determine the fraction of
I2 molecules...