UV/Vis Spectroscopy Questions
1. Give an example of a molecule whose wavelength maximum will blue shift when
it is analyzed as an aqueous solution after being analyzed as a hexane solution.
Why does this occur? Explain IN DETAIL and make sure to use energy level
diagrams.
2. Rank the following molecules in order of UV absorption maximum – diethylether,
benzene, and hexane? Explain the order using Molecular Orbital Theory and an
energy level diagram.
3. Predict whether or not the molecules below would have two distinct wavelength
maxima when analyzed with UV/Vis spectroscopy. Explain your answer.
Acetaminophen
4.
Aspirin
Aspartame is a couple hundred times sweeter than sugar while neotame is about
10,000 times sweeter than sugar. Both are approved sugar substitutes. If you had
a mixture of the two, would you be able to use UV/Vis spectroscopy to determine
qualitatively how much of each you had in your mixture? Explain
Neotame
Aspartame