Question 1

What is the IUPAC name of the following compound?

Accepted Answer

3-ethyl-2-

Question 2

Draw a Newman projection for the following compound as viewed down the indicated bond in the conformation shown.

Accepted Answer

The answer of Draw a Newman projection for the following...

Question 3

Which of the following is a wedge and dash structure for the following Newman projection?

Accepted Answer

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

Question 4

What is the structure of 1-cyclopropyl-3-methylcyclopentane?

Accepted Answer

The answer of What is the structure of 1-cyclopropyl-3-methylcyclopentane?...

Question 5

Which of the following is the lowest energy chair conformation of the following cyclohexane?

Accepted Answer

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

Question 6

Which of the following is a boat conformation of cyclohexane?

Accepted Answer

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

Question 7

Which of the following is a gauche conformation for butane?

Accepted Answer

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

Question 8

Draw the gauche conformer of the following compound looking down the indicated bond.

Accepted Answer

The answer of Draw the gauche conformer of the following...

Question 9

What is the IUPAC name of the following compound?

Accepted Answer

A)  2,5-diethylhexane 
B)  3,6-dimethyloctane 
C)  2-ethyl-5-methylheptane 
D)  2,5-dimethylheptane 
A)  2,5-diethylhexane 
B)  3,6-dimethyloctane 
C)  2-ethyl-5-methylheptane 
D)  2,5-dimethylheptane

Question 10

What is the IUPAC name of the following compound?

Accepted Answer

5-sec-buty

Question 11

Which is more stable?

Accepted Answer

A)  I 
B)  II 
C)  neither 
A)  I 
B)  II 
C)  neither

Question 12

Draw both chair conformers of the following compound.

Accepted Answer

The answer of Draw both chair conformers of the following...

Question 13

Draw a chair conformation of ethylcyclohexane with the ethyl group axial.

Accepted Answer

The answer of Draw a chair conformation of ethylcyclohexane with...

Question 14

Draw the Newman projection of the conformer of the following compound where the two methyl groups are anti.

Accepted Answer

The answer of Draw the Newman projection of the conformer...

Question 15

Which of the following is a CH3-CH3 eclipsed conformation for butane?

Accepted Answer

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

Question 16

What is the eclipsing cost of Br and H if the energy difference between the staggered and eclipsed conformations of bromoethane is 13 kJ/mol?

Accepted Answer

The answer of What is the eclipsing cost of Br...

Question 17

Which of the following is a chair conformation of the following substituted cyclohexane?

Accepted Answer

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

Question 18

Of the following isomers of C9H20, which is the most stable?

Accepted Answer

A)  nonane 
B)  3-methyloctane 
C)  2,2-dimethylheptane 
D)  2,2,3,4-tetramethylpentane 
A)  nonane 
B)  3-methyloctane 
C)  2,2-dimethylheptane 
D)  2,2,3,4-tetramethylpentane

Question 19

Draw a chair conformation of cyclohexane showing all of the equatorial H's.

Accepted Answer

The answer of Draw a chair conformation of cyclohexane showing...

Question 20

Which of the following is a Newman projection of a staggered conformation for propane?

Accepted Answer

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

Exam 4: Alkanes and Cycloalkanes

What is the IUPAC name of the following compound?

Draw a Newman projection for the following compound as viewed down the indicated bond in the conformation shown.

Which of the following is a wedge and dash structure for the following Newman projection?

What is the structure of 1-cyclopropyl-3-methylcyclopentane?

Which of the following is the lowest energy chair conformation of the following cyclohexane?

Which of the following is a boat conformation of cyclohexane?

Which of the following is a gauche conformation for butane?

Draw the gauche conformer of the following compound looking down the indicated bond.

What is the IUPAC name of the following compound?

What is the IUPAC name of the following compound?

Which is more stable?

Draw both chair conformers of the following compound.

Draw a chair conformation of ethylcyclohexane with the ethyl group axial.

Draw the Newman projection of the conformer of the following compound where the two methyl groups are anti.

Which of the following is a CH3-CH3 eclipsed conformation for butane?

What is the eclipsing cost of Br and H if the energy difference between the staggered and eclipsed conformations of bromoethane is 13 kJ/mol?

Which of the following is a chair conformation of the following substituted cyclohexane?

Of the following isomers of C9H20, which is the most stable?

Draw a chair conformation of cyclohexane showing all of the equatorial H's.

Which of the following is a Newman projection of a staggered conformation for propane?

A Review of General Chemistry: Electrons, Bonds, and Molecular Properties

Molecular Representations

Acids and Bases

Stereoisomerism

Chemical Reactivity and Mechanisms

Alkyl Halides: Nucleophilic Substitution and Elimination Reactions

Addition Reactions of Alkenes

Alkynes

Radical Reactions

Synthesis

Alcohols and Phenols

Ethers and Epoxides; Thiols and Sulfides

Infrared Spectroscopy and Mass Spectrometry

Nuclear Magnetic Resonance Spectroscopy

Conjugated Pi Systems and Pericyclic Reactions

Aromatic Compounds

Aromatic Substitution Reactions

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Alpha Carbon Chemistry: Enols and Enolates

Amines

Introduction to Organometallic Compounds

Carbohydrates

Amino Acids, Peptides, and Proteins

Lipids

Synthetic Polymers

Filters

Which of the following is a CH₃-CH₃ eclipsed conformation for butane?

Of the following isomers of C₉H₂₀, which is the most stable?