Aromaticitz ExerciseSource of this Quiz is

http://www.webchem.net/notes/A2/crs/quizzes/arene_reaction_quiz.htmPart 1

1. What are the products when benzene is burnt in a plentiful supply of oxygen?

a) carbon dioxide only

b) hydrogen sulphide

c) carbon dioxide and water

d) carbon monoxide and carbon

2. Which statement is true?

a) Arenes react with anything in very mild conditions

b) Arenes will not react with anything

c) Arenes demand conditions that remove the aromaticity during a chemical reaction

d) Most reactions involving Arenes leave the Aromaticity intact

3. The main reaction mechanism of benzene is.........

a) elimination

b) addition

c) substitution

d) addition/elimination

4. Addition onto a benzene ring results in .....

I have no idea!

addition onto a benzene ring is not possible

break-up of the aromaticity

the replacement of one hydrogen with another.

5. Which of the following might not be an arene?

phenol

methylbenzene

ethylbenzene

benzoic acid

Part 2Source is.

http://highered.mcgraw-hill.com/sites/0072397462/student_view0/chapter17/multiple_choice_quiz.html

1 Based upon your understanding of the basic principles of molecular orbitals it should be possible to answer the following question. Consider the following molecular orbitals of benzene. Which of these molecular orbitals has the lowest energy?

A)orbital II

B)orbital III

C)orbital IV

D)orbital V

2 Based upon your understanding of the basic principles of molecular orbitals it should be possible to answer the following question. Consider the following molecular orbitals of benzene. Which of these molecular orbitals has the highest energy?

A)orbital I

B)orbital II

C)orbital III

D)orbital VI

3 Based upon your understanding of the basic principles of molecular orbitals it should be possible to answer the following question. Consider the following six molecular orbitals of benzene. How many of these orbitals will contain electrons?

A)1

B)3

C)4

D)6

4 What is the correct name of the following molecule?

A)3-Nitrotoluene

B)4-Nitromethylbenzene

C)p-Nitrotoluene

D) (4,1)-Methylnitrobenzene

5 What is the correct name of the following molecule?

A)3,5-difluoroanisole

B)Difluoromethoxybenzene

C)1,5-difluoro-3-methoxybenzene

D)1,3-difluoro-5-methyl-O-benzene

6 How many dibromobenzenes are possible?

A)1

B)2

C)3

D)4

7 When benzene undergoes hydrogenation in the presence of a catalyst, the energy that is released (the heat of hydrogenation) is

A) the same as for cyclohexatriene.

B) the same as for 1,3-cyclohexadiene.

C) the same as for 1,4-cyclohexadiene.

D) less than for 1,3-cyclohexadiene.

8 Which statement regarding Hückel's rule is FALSE?

A)There must be (4n + 2) pi (π) electrons.

B)The molecule must be planar.

C)The molecule must be cyclic.

D)Each of the pi (π) electrons must be associated with a conjugated double bond.

9 How many resonance structures are there for naphthalene?

A)5

B)4

C)3

D)2

10 Which of the following compounds is o-chlorostyrene?

A)

B)

C)

D)

11 The name of the following compound is

A)o-xylene.

B)m-xylene.

C)p-xylene.

D)sp-xylene.

12 The name of the following compound is

A)4-bromo-m-xylene.

B)1-bromo-2,4-dimethylbenzene.

C)p-bromo-m-methyltoluene.

D)o-bromo-m-methyltoluene.

13 Which of the following compounds gives off the LEAST heat per double bond when hydrogenated to cyclohexane?

A)

B)

C)

D)

14 Which of the following structures are aromatic according to Hückel's rule?

A)a and c

B)a, c, and d

C)b and d

D)b, d, and e

15 Which of the following is aromatic?

A)

B)

C)

D)

16 Which of the following is aromatic?

A)

B)

C)

D)

17 Which of the following is antiaromatic?

A)

B)

C)

D)

18 Which of the following is nonaromatic?

A)

B)

C)

D)

19 Which of the following cations is aromatic?

A)b, d

B)d

C)a, b, d

D)b, c, d

20 Which of the following molecules is aromatic according to Hückel's rule?

A)

B)

C)

D)

21 How many peaks would you expect in the 1H NMR spectrum of the following compound?

A)3

B)4

C)5

D)2

22 How many resonance structures are there for anthracene?

A)6

B)5

C)4

D)2

23 How many uncharged resonance structures are there for azulene?

A)1

B)2

C)3

D)4

24 How many resonance structures are there for phenanthrene?

A)6

B)5

C)4

D)3

25 Which of the following compounds are aromatic?

A) a, b, c, and d

B) a, c, and d

C) a, b, d, and e

D) a, b, and d