Question 1

Which of these would you expect to have significant resonance stabilization energy?

Accepted Answer

A) I 
B) II 
C) III 
D) All of these choices. 
E) None of these choices. 
A) I 
B) II 
C) III 
D) All of these choices. 
E) None of these choices.

Question 2

The complete name for the following compound is:

Accepted Answer

A) sec-Hexylbenzene 
B) 2-Phenylhexane 
C) (R)-2-Phenylhexane 
D) (S)-2-Phenylhexane 
E) Butylmethylphenylmethane 
A) sec-Hexylbenzene 
B) 2-Phenylhexane 
C) (R)-2-Phenylhexane 
D) (S)-2-Phenylhexane 
E) Butylmethylphenylmethane

Question 3

In which case does an unshared pair of electrons NOT contribute to the $\pi$ aromatic system?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) None of these choices. 
A) I 
B) II 
C) III 
D) IV 
E) None of these choices.

Question 4

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

Accepted Answer

A) Br2,CCl4 
B) KMnO4,OH-,H2O 
C) NMR Spectroscopy 
D) UV Spectroscopy 
E) Two of these choices. 
A) Br2,CCl4 
B) KMnO4,OH-,H2O 
C) NMR Spectroscopy 
D) UV Spectroscopy 
E) Two of these choices.

Question 5

In the molecular orbital model of benzene,how many pi electrons are in bonding molecular orbitals?

Accepted Answer

A) 6 
B) 5 
C) 4 
D) 3 
E) 2 
A) 6 
B) 5 
C) 4 
D) 3 
E) 2

Question 6

Which of the following structures would be aromatic?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 7

Draw all significant resonance structures for the cyclopentadienyl anion.

Accepted Answer

The answer of Draw all significant resonance structures for the...

Question 8

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. 
A) I 
B) II 
C) III 
D) IV 
E) None of these choices.

Question 9

In the molecular orbital model of the cyclopentadienyl cation,how many pairs of degenerate $\pi$-bonding molecular orbitals are there?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 10

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

Accepted Answer

A) 6 
B) 5 
C) 4 
D) 3 
E) 2 
A) 6 
B) 5 
C) 4 
D) 3 
E) 2

Question 11

In the molecular orbital model of benzene,how many pi electrons are delocalized about the ring?

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
E) 6 
A) 2 
B) 3 
C) 4 
D) 5 
E) 6

Question 12

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

Accepted Answer

A) 6 
B) 5 
C) 4 
D) 3 
E) 2 
A) 6 
B) 5 
C) 4 
D) 3 
E) 2

Question 13

4-Amino-2-bromoanisole is:

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 14

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

Accepted Answer

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

Question 15

How many different dibromophenols are possible?

Accepted Answer

A) 8 
B) 7 
C) 6 
D) 5 
E) 4 
A) 8 
B) 7 
C) 6 
D) 5 
E) 4

Question 16

In the molecular orbital model of the cyclopentadienyl cation,how many $\pi$-antibonding molecular orbitals are there?

Accepted Answer

A) 6 
B) 5 
C) 4 
D) 3 
E) 2 
A) 6 
B) 5 
C) 4 
D) 3 
E) 2

Question 17

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

Accepted Answer

A) 6 
B) 5 
C) 4 
D) 3 
E) 2 
A) 6 
B) 5 
C) 4 
D) 3 
E) 2

Question 18

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

Accepted Answer

A) 4 
B) 5 
C) 6 
D) 7 
E) 8 
A) 4 
B) 5 
C) 6 
D) 7 
E) 8

Question 19

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

Accepted Answer

A) 6 
B) 5 
C) 4 
D) 3 
E) 2 
A) 6 
B) 5 
C) 4 
D) 3 
E) 2

Question 20

Which of the following statements regarding the cyclopropenyl 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. 
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.

Exam 14: Aromatic Compounds

Which of these would you expect to have significant resonance stabilization energy?

The complete name for the following compound is:

In which case does an unshared pair of electrons NOT contribute to the π\piπ aromatic system?

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

In the molecular orbital model of benzene,how many pi electrons are in bonding molecular orbitals?

Which of the following structures would be aromatic?

Draw all significant resonance structures for the cyclopentadienyl anion.

Which of the following would you expect to be aromatic?

In the molecular orbital model of the cyclopentadienyl cation,how many pairs of degenerate π\piπ -bonding molecular orbitals are there?

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

In the molecular orbital model of benzene,how many pi electrons are delocalized about the ring?

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

4-Amino-2-bromoanisole is:

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

How many different dibromophenols are possible?

In the molecular orbital model of the cyclopentadienyl cation,how many π\piπ -antibonding molecular orbitals are there?

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

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

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

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

The Basics

Families of Carbon

Acids and Bases

Nomenclature and Conformations of Alkanes and Cycloalkanes

Stereochemistry

Nucleophilic Reactions

Alkenes and Alkynes I

Alkenes and Alkynes II

Nuclear Magnetic Resonance and Mass Spectrometry

Radical Reactions

Alcohols and Ethers

Alcohols From Carbonyl Compounds

Conjugated Unsaturated Systems

Reactions of Aromatic Compounds

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Reactions at the Α Carbon of Carbonyl Compounds

Condensation and Conjugate Addition Reactions of Carbonyl Compounds

Amines

Transition Metal Complexes

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids and Protein Synthesis

Filters

In which case does an unshared pair of electrons NOT contribute to the $\pi$ aromatic system? $In which case does an unshared pair of electrons NOT contribute to the \pi aromatic system?$ $In which case does an unshared pair of electrons NOT contribute to the \pi aromatic system?$

In the molecular orbital model of the cyclopentadienyl cation,how many pairs of degenerate $\pi$ -bonding molecular orbitals are there?

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

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

In the molecular orbital model of the cyclopentadienyl cation,how many $\pi$ -antibonding molecular orbitals are there?

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

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

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