Question 1

Molecular orbitals of equal energy are referred to as ___ orbitals.

Accepted Answer

The answer of Molecular orbitals of equal energy are referred...

Question 2

Which of the following would you expect to be aromatic?

Accepted Answer

A)  I
B)  II
C)  III
D)  IV
E)  None of these choices.F) A) and E)
G) None of the above

Question 3

Which of the following statements regarding the cyclopentadienyl cation is correct?

Accepted Answer

A)  It is aromatic.
B)  It is not aromatic.
C)  It obeys Hückel's rule.
D)  It undergoes reactions characteristic of benzene.
E)  It has a closed shell of 6 pi electrons.F) C) and D)
G) C) and E)

Question 4

4-Bromo-2-nitroaniline is:

Accepted Answer

A)  I
B)  II
C)  III
D)  IV
E)  VF) B) and D)
G) B) and E)

Question 5

In the molecular orbital model of benzene,how many pairs of degenerate  π\piπ -antibonding molecular orbitals are there?

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  5 F) D) and E)
G) A) and C)

Question 6

Which reagent(s) /technique would serve to distinguish between azulene and bicyclo[5.3.0]decane? 2,CCl4 B) KMnO4,OH-,H2O C) NMR Spectroscopy D) NaBH4,H2O E) Two of these choices." class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  Br2,CCl4
B)  KMnO4,OH-,H2O
C)  NMR Spectroscopy
D)  NaBH4,H2O
E)  Two of these choices.F) All of the above
G) B) and D) C

Question 7

How many different dihydroxybromobenzenes are possible?

Accepted Answer

A)  8
B)  7
C)  6
D)  5
E)  4F) A) and B)
G) A) and C)

Question 8

Anisole is the name commonly assigned to:

Accepted Answer

A)  Hydroxybenzene
B)  Aminobenzene
C)  Methylbenzene
D)  Ethylbenzene
E)  MethoxybenzeneF) A) and E)
G) None of the above

Question 9

Although all bond lengths in benzene are identical,that is not always true for all aromatic compounds.In naphthalene,for instance,the C1-C2 bond is shorter than the C2-C3 bond.Explain,using resonance theory.

Accepted Answer

The major resonance structures for napht...

Question 10

Why would 1,3-cyclohexadiene undergo dehydrogenation readily?

Accepted Answer

A)  It is easily reduced.
B)  Hydrogen is a small molecule.
C)  1,3-Cyclohexadiene has no resonance energy.
D)  It would gain considerable stability by becoming benzene.
E)  It would not undergo dehydrogenation.F) A) and C)
G) A) and E)

Question 11

Hückel's Rule requires ___ $\pi$ electrons for an aromatic compound.

Accepted Answer

The answer of Hückel's Rule requires ___ $\pi$ electrons for...

Question 12

Draw all significant resonance structures for azulene,C10H8

Accepted Answer

Question 13

Draw all significant resonance structures for pyridine,C6H5N

Accepted Answer

Question 14

How many resonances would be expected in the broadband proton-decoupled 13C spectrum of: 13C spectrum of:   A) 2 B) 3 C) 4 D) 5 E) 6" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  2
B)  3
C)  4
D)  5
E)  6F) A) and D)
G) B) and C)

Question 15

How many equivalent resonance structures can be written for the cyclobutadienyl dication?

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  No equivalent resonance forms can be drawn.F) A) and D)
G) B) and E)

Question 16

Which of the following statements regarding the cycloheptatrienyl radical is correct?

Accepted Answer

A)  It is aromatic.
B)  It is not aromatic.
C)  It obeys Hückel's rule.
D)  It undergoes reactions characteristic of benzene.
E)  It has a closed shell of 6 pi electrons.F) A) and C)
G) A) and B)

Question 17

Which of the following would you expect to be aromatic?

Accepted Answer

A)  I
B)  II
C)  III
D)  IV
E)  All of these choices.F) B) and E)
G) B) and D)

Question 18

Which reagent(s) would serve as the basis for a simple chemical test that would distinguish between benzene and 1-hexene?

Accepted Answer

A)  NaOH in H2O
B)  Br2 in CCl4
C)  AgNO3 in C2H5OH
D)  NaHSO3 in H2O
E)  None of these choices.F) A) and D)
G) C) and D)

Question 19

Which of the following is NOT true of benzene?

Accepted Answer

A)  Benzene tends to undergo substitution rather than addition reactions,even though it has a high index of hydrogen deficiency.
B)  All of the hydrogen atoms of benzene are equivalent.
C)  The carbon-carbon bonds of benzene are alternately short and long around the ring.
D)  Only one o-dichlorobenzene has ever been found.
E)  Benzene is more stable than the hypothetical compound 1,3,5-cyclohexatriene.F) A) and B)
G) C) and D) C

Question 20

How many resonances would be expected in the broadband proton-decoupled 13C spectrum of: 13C spectrum of:   A) 1 B) 2 C) 3 D) 4 E) 5" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  5F) A) and D)
G) A) and C)

Exam 14: Aromatic Compounds

Molecular orbitals of equal energy are referred to as ___ orbitals.

Correct AnswerverifiedShow Answer

Which of the following would you expect to be aromatic?

Correct AnswerverifiedShow Answer

Which of the following statements regarding the cyclopentadienyl cation is correct?

Correct AnswerverifiedShow Answer

4-Bromo-2-nitroaniline is:

Correct AnswerverifiedShow Answer

In the molecular orbital model of benzene,how many pairs of degenerate π\piπ -antibonding molecular orbitals are there?

Correct AnswerverifiedShow Answer

Which reagent(s) /technique would serve to distinguish between azulene and bicyclo[5.3.0]decane?

Correct AnswerverifiedC

How many different dihydroxybromobenzenes are possible?

Correct AnswerverifiedShow Answer

Anisole is the name commonly assigned to:

Correct AnswerverifiedShow Answer

Although all bond lengths in benzene are identical,that is not always true for all aromatic compounds.In naphthalene,for instance,the C1-C2 bond is shorter than the C2-C3 bond.Explain,using resonance theory.

Correct AnswerverifiedThe major resonance structures for napht...View AnswerShow Answer

Why would 1,3-cyclohexadiene undergo dehydrogenation readily?

Correct AnswerverifiedShow Answer

Hückel's Rule requires ___ π\piπ electrons for an aromatic compound.

Correct AnswerverifiedShow Answer

Draw all significant resonance structures for azulene,C10H8

Correct Answerverified11eaa4bc_3df5_897d_9180_3575f77c6d13_TB5902_00

Draw all significant resonance structures for pyridine,C6H5N

Correct AnswerverifiedShow Answer

How many resonances would be expected in the broadband proton-decoupled 13C spectrum of:

Correct AnswerverifiedShow Answer

How many equivalent resonance structures can be written for the cyclobutadienyl dication?

Correct AnswerverifiedShow Answer

Which of the following statements regarding the cycloheptatrienyl radical is correct?

Correct AnswerverifiedShow Answer

Which of the following would you expect to be aromatic?

Correct AnswerverifiedShow Answer

Which reagent(s) would serve as the basis for a simple chemical test that would distinguish between benzene and 1-hexene?

Correct AnswerverifiedShow Answer

Which of the following is NOT true of benzene?

Correct AnswerverifiedC

How many resonances would be expected in the broadband proton-decoupled 13C spectrum of:

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

In the molecular orbital model of benzene,how many pairs of degenerate $\pi$ -antibonding molecular orbitals are there?

Correct Answer
verified

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The major resonance structures for napht...
View Answer

Correct Answer
verified

Hückel's Rule requires ___ $\pi$ electrons for an aromatic compound.

Correct Answer
verified

Draw all significant resonance structures for azulene,C₁₀H₈

Correct Answer
verified
11eaa4bc_3df5_897d_9180_3575f77c6d13_TB5902_00

Draw all significant resonance structures for pyridine,C₆H₅N

Correct Answer
verified

How many resonances would be expected in the broadband proton-decoupled ¹³C spectrum of:

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
C

How many resonances would be expected in the broadband proton-decoupled ¹³C spectrum of:

Correct Answer
verified