Question 1

What is the index of hydrogen deficiency (or degree of unsaturation)of the following molecule?

Accepted Answer

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

Question 2

The most stable conformation of butane is:

Accepted Answer

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

Question 3

-Which of the above is bicyclo[3.3.1]nonane?

Accepted Answer

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

Question 4

Consider the graph below,which is a plot of the relative energies of the various conformations of 2,3-dimethylbutane,viewed through the C-2-C-3 bond.The conformations corresponding to the 120o and 240o are:

Accepted Answer

A)  Eclipsed,more stable than the conformation at 0o 
B)  Eclipsed,more stable than the conformation at 180o 
C)  Staggered,more stable than the conformation at 0o 
D)  Staggered,less stable than the conformation at 180o 
E)  Two of the above are true 
A)  Eclipsed,more stable than the conformation at 0o 
B)  Eclipsed,more stable than the conformation at 180o 
C)  Staggered,more stable than the conformation at 0o 
D)  Staggered,less stable than the conformation at 180o 
E)  Two of the above are true

Question 5

The most stable conformation of 3-bromo-2-methylpentane,viewed through the C-2-C-3 bond (i.e. ,C-2 in the front,C-3 in the back):

Accepted Answer

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

Question 6

What is the correct IUPAC name for the following compound?

Accepted Answer

A)  5-Ethyl-3-fluorohexanol 
B)  5-Ethyl-3-fluoro-1-hexanol 
C)  2-Ethyl-4-fluoro-6-hexanol 
D)  3-fluoro-5-methyl-7-heptanol 
E)  3-fluoro-5-methyl-1-heptanol 
A)  5-Ethyl-3-fluorohexanol 
B)  5-Ethyl-3-fluoro-1-hexanol 
C)  2-Ethyl-4-fluoro-6-hexanol 
D)  3-fluoro-5-methyl-7-heptanol 
E)  3-fluoro-5-methyl-1-heptanol

Question 7

Give the IUPAC name for

Accepted Answer

A)  3-Methyl-4-hexyne 
B)  4-Methyl-2-hexyne 
C)  2-Ethyl-3-pentyne 
D)  4-Ethyl-2-pentyne 
E)  3-Methyl-2-hexyne 
A)  3-Methyl-4-hexyne 
B)  4-Methyl-2-hexyne 
C)  2-Ethyl-3-pentyne 
D)  4-Ethyl-2-pentyne 
E)  3-Methyl-2-hexyne

Question 8

The most stable conformation of cis-1-tert-butyl-2-methylcyclohexane is the one in which:

Accepted Answer

A)  the tert-butyl group is axial and the methyl group is equatorial. 
B)  the methyl group is axial and the tert-butyl group is equatorial. 
C)  both groups are axial. 
D)  both groups are equatorial. 
E)  the twist boat conformation is adopted. 
A)  the tert-butyl group is axial and the methyl group is equatorial. 
B)  the methyl group is axial and the tert-butyl group is equatorial. 
C)  both groups are axial. 
D)  both groups are equatorial. 
E)  the twist boat conformation is adopted.

Question 9

What is the index of hydrogen deficiency (or degree of unsaturation)of a compound with the molecular formula of C6H5BrClN?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  4 
A)  0 
B)  1 
C)  2 
D)  3 
E)  4

Question 10

Which alkene would yield 3-methylpentane when subjected to catalytic hydrogenation?

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E) 
  
A) 
  
B) 
  
C) 
  
D) 
  
E)

Question 11

What is the index of hydrogen deficiency (or degree of unsaturation)of the hormone cortisol?

Accepted Answer

A)  3 
B)  4 
C)  5 
D)  6 
E)  7 
A)  3 
B)  4 
C)  5 
D)  6 
E)  7

Question 12

A correct IUPAC name for the following compound is:

Accepted Answer

A)  3,6,7-trimethyl-4-bromo-1-octene 
B)  4-bromo-3-methyl-6-isopropyl-1-heptene 
C)  4-bromo-3,6,7-trimethyl-1-octene 
D)  4-bromo-6-isopropyl-3-methyl-1-heptene 
E)  4-bromo-6-isopropyl-3,6-dimethyl-1-hexene 
A)  3,6,7-trimethyl-4-bromo-1-octene 
B)  4-bromo-3-methyl-6-isopropyl-1-heptene 
C)  4-bromo-3,6,7-trimethyl-1-octene 
D)  4-bromo-6-isopropyl-3-methyl-1-heptene 
E)  4-bromo-6-isopropyl-3,6-dimethyl-1-hexene

Question 13

The least stable conformation of 3-bromo-2-methylpentane,viewed through the C-2-C-3 bond (i.e. ,C-2 in the front,C-3 in the back):

Accepted Answer

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

Question 14

What product is formed when trans-1,2-dimethylcyclohexane is reacted with Pd/C and H2?

Accepted Answer

A)  No reaction
2 
B)  cis-1,2-dimethylcyclohexane 
C)  trans-3,4-dimethylhexane 
D)  trans-1,2-dimethylhexane 
E)  None of the above 
A)  No reaction
2 
B)  cis-1,2-dimethylcyclohexane 
C)  trans-3,4-dimethylhexane 
D)  trans-1,2-dimethylhexane 
E)  None of the above

Question 15

What is the name of this compound?

Accepted Answer

A)  Bicyclo[2.2.2]octane 
B)  Bicyclo[3.2.1]octane 
C)  Bicyclo[4.1.1]octane 
D)  Bicyclo[4.2.0]octane 
E)  Bicyclo[3.3.0]octane 
A)  Bicyclo[2.2.2]octane 
B)  Bicyclo[3.2.1]octane 
C)  Bicyclo[4.1.1]octane 
D)  Bicyclo[4.2.0]octane 
E)  Bicyclo[3.3.0]octane

Question 16

What is the index of hydrogen deficiency (or degree of unsaturation)for the drug THC?

Accepted Answer

A)  3 
B)  4 
C)  5 
D)  6 
E)  7 
A)  3 
B)  4 
C)  5 
D)  6 
E)  7

Question 17

What is the index of hydrogen deficiency (or degree of unsaturation)of the following molecule?

Accepted Answer

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

Question 18

What is the index of hydrogen deficiency (or degree of unsaturation)of a compound with the molecular formula of C11H20Br3F4N3O3?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  4 
A)  0 
B)  1 
C)  2 
D)  3 
E)  4

Question 19

Which of the following will have the same energy after undergoing ring flip?

Accepted Answer

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

Question 20

Which of the following is bicyclo[3.2.2]nonane?

Accepted Answer

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

Exam 4: Alkanes: Nomenclature, Conformational Analysis, and an Introduction to Synthesis

What is the index of hydrogen deficiency (or degree of unsaturation)of the following molecule?

The most stable conformation of butane is:

-Which of the above is bicyclo[3.3.1]nonane?

Consider the graph below,which is a plot of the relative energies of the various conformations of 2,3-dimethylbutane,viewed through the C-2-C-3 bond.The conformations corresponding to the 120o and 240o are:

The most stable conformation of 3-bromo-2-methylpentane,viewed through the C-2-C-3 bond (i.e. ,C-2 in the front,C-3 in the back):

What is the correct IUPAC name for the following compound?

Give the IUPAC name for

The most stable conformation of cis-1-tert-butyl-2-methylcyclohexane is the one in which:

What is the index of hydrogen deficiency (or degree of unsaturation)of a compound with the molecular formula of C6H5BrClN?

Which alkene would yield 3-methylpentane when subjected to catalytic hydrogenation?

What is the index of hydrogen deficiency (or degree of unsaturation)of the hormone cortisol?

A correct IUPAC name for the following compound is:

The least stable conformation of 3-bromo-2-methylpentane,viewed through the C-2-C-3 bond (i.e. ,C-2 in the front,C-3 in the back):

What product is formed when trans-1,2-dimethylcyclohexane is reacted with Pd/C and H2?

What is the name of this compound?

What is the index of hydrogen deficiency (or degree of unsaturation)for the drug THC?

What is the index of hydrogen deficiency (or degree of unsaturation)of the following molecule?

What is the index of hydrogen deficiency (or degree of unsaturation)of a compound with the molecular formula of C11H20Br3F4N3O3?

Which of the following will have the same energy after undergoing ring flip?

Which of the following is bicyclo[3.2.2]nonane?

Carbon Compounds and Chemical Bonds

Representative Carbon Compounds: Functional Groups, Intermolecular Forces, and Infrared Ir Spectroscopy

An Introduction to Organic Reactions: Acids and Bases

Stereochemistry: Chiral Molecules

Ionic Reactions - Nucleophilic Substitution and Elimination Reactions of Alkyl Halides

Alkenes and Alkynes I: Properties and Synthesis, Elimination Reactions of Alkyl Halides

Alkenes and Alkynes Ii: Addition Reactions

Nuclear Magnetic Resonance and Mass Spectrometry: Tools for Structure Determination

Radical Reactions

Alcohols and Ethers

Alcohols From Carbonyl Compounds Oxidation-Reduction and Organometallic Compounds

Conjugated Unsaturated Systems

Aromatic Compounds

Reactions of Aromatic Compounds

Aldehydes and Ketones I Nucleophilic Addition to the Carbonyl Group

Aldehydes and Ketones Ii Aldol Reactions

Carboxylic Acids and Their Derivatives Nucleophilic Addition - Elimination at the Acyl Carbon

Synthesis and Reactions of Beta-Dicarbonyl Compounds: More Chemistry of Enolate Ions

Amines

Phenols and Aryl Halides: Nucleophilic Aromatic Substitution

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids and Protein Synthesis

Filters

Consider the graph below,which is a plot of the relative energies of the various conformations of 2,3-dimethylbutane,viewed through the C-2-C-3 bond.The conformations corresponding to the 120^o and 240^o are:

What is the index of hydrogen deficiency (or degree of unsaturation)of a compound with the molecular formula of C₆H₅BrClN?

What product is formed when trans-1,2-dimethylcyclohexane is reacted with Pd/C and H₂?

What is the index of hydrogen deficiency (or degree of unsaturation)of a compound with the molecular formula of C₁₁H₂₀Br₃F₄N₃O₃?