Question

According to ChemActivity 1, HF at 25oC has the following average energies:
Translational: 3.72 kJ/mol
Rotational: 2.48 kJ/mol
Vibrational: 23.7 kJ/mol
The HF internuclear distance is 92 pm. Mass of 19F = 18.9984 amu, mass of 1H = 1.0078 amu.
The force constant of the HF bond is 2448 N/m.
9. What is the average translational energy per molecule? How many modes of translational energy
storage are there? What is the average energy per mode of translational motion? If the gas is confined
to a cubical box 10 cm on each side, estimate the average energy level (i.e. what is the average value of
n = nx = ny = nz)?

Answer 1