Sample pre-lab quiz for the Limonene experiment.

1) Limonene is an example of a terpene. Terpenes are:

1. a class of natural products
2. made up of isoprene units
3. widely distributed in nature, and often responsible for the odors of plants
4. all of the above
5. none of the above

2) Which of the following structures represents limonene?

3) In a steam distillation of a mixture of an organic compound that is immiscible with water, the boiling point of the mixture is always below 100 degrees.

1. true
2. false

4) As you steam-distill the water-limonene mixture, you should see in the collection flask:

1. pure water
2. pure limonene
3. acetone
4. a mixure of limonene and water, with limonene floating on top

Answers.