1. Chemistry
2. Organic Chemistry
3. 64026

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Absorption of UV-visible energy by a molecule results in:

a. vibrational transitions

b. rotational transitions

c. proton flips

d. electronic transitions.

2. Which of the following compounds absorbs the longest wavelength of UV-visible light?

a. 2-butene

b. 1,4-hexadiene

c. 1,3-hexadiene

d. 1,3,5-hexatriene.

3. What is the absorbance of a sample of isoprene (e = 20,000) of 8.0 x 10-6M solution in a 1 cm cuvette?

a. 0.16

b. 1.60

c. 4 x10 -2

d. 4 x 10 -10.