1). a. For reactions A and B give the reagents used in each case.

b. Reaction A was repeated using 1-iodobutane instead of 1-bromobutane. Explain any difference in the rate of reaction observed.

c. What type of organic reaction is A?

d. Show the mechanism for reaction A.

e. What type of reaction is B?

2. a. What is the main environmental problem caused by the use of CFCs?

b. CF₃CH₂F is being introduced as a replacement for various CFCs in refrigerants and aerosols. Name this compound.

c. Draw the displayed formula of bromochlorodifluoromethane, used in fire extinguishers(but its breakdown products were found to be toxic)

3. a. Name the following compounds:

i) CH₃COCH₃

ii) CH₃CHO

iii) CH₃COCH₂CH₃

iv) CH₃CH₂CHO

b. Which of the compounds in part a are carbonyl compounds?

c. Which of the carbonyl compounds in part a are aldehydes and which are ketones?

d. Draw the skeletal formula of: i) pentan-2-one ii) pentanal

e. describe the results you would expect to see if pentan-2-one and pentanal were separately treated with Tollen's reagent

4. a. Name the two kinds of side-chains (groups) that are added to a benzene ring during

Friedel Crafts reaction. Give an example of each group that can be added.