Chemistry 2710 Spring 2000 Practice Problems

1. The vibrational energy level spacing in carbon monoxide is . Calculate
   1. the vibrational frequency, and
   2. the ratio of the number of molecules in adjacent energy levels at several different temperatures in the range 10-1000K. Plot the results of these calculations against .
2. The amino acid tryptophan absorbs light at 280nm. This absorption is due to an electronic transition. We can calculate from the wavelength that the electronic energy levels involved in this transition are apart. Calculate the ratio of the numbers of molecules in the two states at room temperature.