Vibration-Rotation Spectrum of HBr

1. Label the absorption lines with vibrational and rotational quantum numbers.
2. Explain why there is a missing line in the center.
3. Determine the force constant for this molecule as accurately as you can from this data.
4. Determine the bond length of the HBr molecule and compare with a standard value.
5. Explain why the lines intensities peak as they move away from the center and then diminish. See if you can use the internsities to estimate the temperature of this sample.
6. Explain why the lines to the left of center are further apart in energy than the lines to the right.