Download DEHYDRATION - ALKENE TEST EXERCISES

DEHYDRATION - ALKENE TEST EXERCISES
1. Give a detailed mechanism for the acid-catalyzed dehydration of cyclohexanol to
cyclohexene.
2. What is the function of the acid catalyst in promoting the dehydration of alcohols?
3. Why would concentrated hydrochloric acid be an inappropriate catalyst for the
dehydration of alcohols ?
4. Why is the formation of substitution products involving displacement of water by attack
of bisulfate or of dihydrogen phosphate upon a protonated alcohol not a reaction of
concern in these procedures ?
5. Write equations for the chemical reaction(s) that you will use to demonstrate the
presence of alkene(s) in your distilled product.
6. Why is it important to dry the crude alkene(s) prior to the final distillation ?
7. What is the "limiting reagent" in the dehydration procedures ?