INTRODUCTION TO BENZENE AND ITS PHYSICAL PROPERTIES ASSIGNMENT

1. True or False? The compound below contains a benzene ring and thus is aromatic.

2. Benzene unusual stability is caused by a combination of the  _________________  conjugated pi bonds in its cyclic ring.

                                                        specify the number

3.  Menthol, a topical analgesic used in many ointments for the relief of pain, releases a peppermint aroma upon exposure to the air. Based on this conclusion, can you imply that a benzene ring is present in its chemical structure? Why or why not?

4. Predict the product of the reaction below or explain why no reaction occurs.

5. At normal conditions, benzene has ___ resonance structures.

6. Which of the following name(s) is/are correct for the following compound?

a) nitrohydride benzene
b) phenylamine
c) phenylamide
d) aniline
e) nitrogenhydrogen benzene
f) All of the above is correct

7. Convert 1,4-dimethylbenzene into its common name.

8. TNT’s common name is: ______________________________

9. Name the following compound using OMP nomenclature:

10. Draw the structure of 2,4-dinitrotoluene.

11. Give the IUPAC name the following compound:

12. Which of the following is the correct name for the following compound?

a) 3,4-difluorobenzyl bromide
b) 1,2-difluorobenzyl bromide
c) 4,5-difluorobenzyl bromide
d) 1,2-difluoroethyl bromide
e) 5,6-difluoroethyl bromide
f) 4,5-difluoroethyl bromide

13.    a)   True or False? Benzyl chloride can be abbreviated Bz-Cl.  b)    What is the condensed formula for benzyl chloride?

c)  What is the condensed formula for phenyl chloride?

14.  Benzoic Acid has what R group attached to its phenyl functional group?

15.  True or False? A single aromatic compound can have multiple names indicating its structure.

16. List the corresponding positions for the OMP system (o-, m-, p-).

17.  A scientist has conducted an experiment on an unknown compound. He was able to determine that the unknown compound contains a cyclic ring in its structure as well as an alcohol (-OH) group attached to the ring. What is the unknown compound?

a) Cyclohexanol
b) Cyclicheptanol
c) Phenol
d) Methanol
e) Bleach
f) Cannot determine from the above information

18. Which of the following statements is false for the compound, phenol?

a) Phenol is a benzene derived compound.
b) Phenol can be made by attaching an -OH group to a phenyl group.
c) Phenol is highly toxic to the body even in small doses.
d) Phenol can be used as a catalyst in the hydrogenation of benzene into cyclohexane.
e) Phenol is used as an antiseptic in minute doses.
f) Phenol is amongst one of the three common names retained in the IUPAC nomenclature.