Question 1

Give the IUPAC name for the cycloalkane shown below.

Accepted Answer

trans-1-et

Question 2

Draw the most stable conformation of cis-1-t-butyl-4-methylcyclohexane.

Accepted Answer

The answer of Draw the most stable conformation of cis-1-t-butyl-4-methylcyclohexane....

Question 3

List three commercial products which are composed primarily of alkanes.

Accepted Answer

natural gas, gasoline, kerosen

Question 4

Which alkanes have largely replaced Freons as propellants in aerosol cans?

Accepted Answer

A)  methane and ethane 
B)  propane and butane 
C)  pentane and hexane 
D)  nonane and decane 
E)  none of the above 
A)  methane and ethane 
B)  propane and butane 
C)  pentane and hexane 
D)  nonane and decane 
E)  none of the above

Question 5

Which line-angle formula corresponds to the chair conformation shown below?

Accepted Answer

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

Question 6

How many secondary (2°) carbons are found in 5-ethyl-3,3,4-trimethylheptane?

Accepted Answer

A)  1 
B)  4 
C)  2 
D)  3 
E)  6 
A)  1 
B)  4 
C)  2 
D)  3 
E)  6

Question 7

Draw an acceptable structure for 1-ethyl-2-(2,2-dimethylpentyl)cyclopentane.

Accepted Answer

The answer of Draw an acceptable structure for 1-ethyl-2-(2,2-dimethylpentyl)cyclopentane....

Question 8

Define the term conformation.

Accepted Answer

Conformations are different ar

Question 9

Draw isopropylcyclohexane in a chair conformation and then draw its ring flipped isomer. Label the substituent as either axial or equitorial. Indicate which of the conformers is more stable.

Accepted Answer

The answer of Draw isopropylcyclohexane in a chair conformation and...

Question 10

From the perspective of viewing down the C2-C3 bond, draw the Newman projection of the least stable conformation of 2,3-dimethylbutane.

Accepted Answer

The answer of From the perspective of viewing down the...

Question 11

Provide an acceptable name for the alkane shown below.
CH3CH2CH2CH2CH2CH3

Accepted Answer

Question 12

Provide an acceptable name for the alkane shown below.

Accepted Answer

6-ethyl-2-

Question 13

Which of the following describes the compound below?

Accepted Answer

A)  bridged bicyclic 
B)  fused bicyclic 
C)  spiro bicyclic 
D)  bridged tricyclic 
A)  bridged bicyclic 
B)  fused bicyclic 
C)  spiro bicyclic 
D)  bridged tricyclic

Question 14

Provide the IUPAC name of (CH3CH2)3CH.

Accepted Answer

Question 15

When one compares the densities of n-hexane and water, one finds ________.

Accepted Answer

A)  that n-hexane is less dense than water 
B)  that n-hexane is more dense than water 
C)  that these two compounds have the same density 
D)  that the relative densities of two immiscible compounds cannot be measured 
A)  that n-hexane is less dense than water 
B)  that n-hexane is more dense than water 
C)  that these two compounds have the same density 
D)  that the relative densities of two immiscible compounds cannot be measured

Question 16

A branched alkane has ________ boiling point relative to the isomeric linear alkane. There are ________ London force interactions in the branched alkane.

Accepted Answer

A)  a higher; stronger 
B)  a higher; weaker 
C)  a lower, stronger 
D)  a lower; weaker 
E)  the same; similar 
A)  a higher; stronger 
B)  a higher; weaker 
C)  a lower, stronger 
D)  a lower; weaker 
E)  the same; similar

Question 17

Identify the correct IUPAC name for the structure shown below.

Accepted Answer

A)  1-tert-butyl-2-chloro-5-bromocycloheptane 
B)  5-bromo-1-tert-butyl-2-chlorocycloheptane 
C)  1-bromo-4-chloro-5-tertbutylcycloheptane 
D)  1-bromo-4-tert-butyl-5-chlorocycloheptane 
E)  1-tert-butyl-4-bromo-7-chlorocycloheptane 
A)  1-tert-butyl-2-chloro-5-bromocycloheptane 
B)  5-bromo-1-tert-butyl-2-chlorocycloheptane 
C)  1-bromo-4-chloro-5-tertbutylcycloheptane 
D)  1-bromo-4-tert-butyl-5-chlorocycloheptane 
E)  1-tert-butyl-4-bromo-7-chlorocycloheptane

Question 18

Draw the Newman projection of the highest energy conformation that results from rotation about the C2-C3 bond of 2,2-dimethylbutane.

Accepted Answer

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

Question 19

A series of compounds, like the n-alkanes, that differ only by the number of   
groups, is called a(n) ________ series.

Accepted Answer

The answer of A series of compounds, like the n-alkanes,...

Question 20

Which of the statements below correctly describes the chair conformations of

Accepted Answer

A)  The two chair conformations are equal in energy. 
B)  The higher energy chair conformation contains two axial ethyl groups. 
C)  The higher energy chair conformation contains two equatorial ethyl groups. 
D)  The lower energy chair conformation contains two axial ethyl groups. 
E)  The lower energy chair conformation contains two equatorial ethyl groups. 
A)  The two chair conformations are equal in energy. 
B)  The higher energy chair conformation contains two axial ethyl groups. 
C)  The higher energy chair conformation contains two equatorial ethyl groups. 
D)  The lower energy chair conformation contains two axial ethyl groups. 
E)  The lower energy chair conformation contains two equatorial ethyl groups.

Exam 3: Structure and Stereochemistry of Alkanes

Give the IUPAC name for the cycloalkane shown below.

Draw the most stable conformation of cis-1-t-butyl-4-methylcyclohexane.

List three commercial products which are composed primarily of alkanes.

Which alkanes have largely replaced Freons as propellants in aerosol cans?

Which line-angle formula corresponds to the chair conformation shown below?

How many secondary (2°) carbons are found in 5-ethyl-3,3,4-trimethylheptane?

Draw an acceptable structure for 1-ethyl-2-(2,2-dimethylpentyl)cyclopentane.

Define the term conformation.

Draw isopropylcyclohexane in a chair conformation and then draw its ring flipped isomer. Label the substituent as either axial or equitorial. Indicate which of the conformers is more stable.

From the perspective of viewing down the C2-C3 bond, draw the Newman projection of the least stable conformation of 2,3-dimethylbutane.

Provide an acceptable name for the alkane shown below. CH3CH2CH2CH2CH2CH3

Provide an acceptable name for the alkane shown below.

Which of the following describes the compound below?

Provide the IUPAC name of (CH3CH2)3CH.

When one compares the densities of n-hexane and water, one finds ________.

A branched alkane has ________ boiling point relative to the isomeric linear alkane. There are ________ London force interactions in the branched alkane.

Identify the correct IUPAC name for the structure shown below.

Draw the Newman projection of the highest energy conformation that results from rotation about the C2-C3 bond of 2,2-dimethylbutane.

A series of compounds, like the n-alkanes, that differ only by the number of groups, is called a(n) ________ series.

Which of the statements below correctly describes the chair conformations of

Structure and Bonding

Acids and Bases; Functional Groups

The Study of Chemical Reactions

Stereochemistry

Alkyl Halides; Nucleophilic Substitution

Structure and Synthesis of Alkenes; Elimination

Reactions of Alkenes

Structure and Synthesis of Alcohols

Reactions of Alcohols

Infrared Spectroscopy and Mass Spectrometry

Nuclear Magnetic Resonance Spectroscopy

Ethers, Epoxides, and Thioethers

Conjugated Systems, Orbital Symmetry, and Ultraviolet Spectroscopy

Aromatic Compounds

Reactions of Aromatic Compounds

Ketones and Aldehydes

Amines

Carboxylic Acids

Carboxylic Acid Derivatives

Condensations and Alpha Substitutions of Carboxyl Compounds

Carbohydrates and Nucleic Acids

Amino Acids, Peptides, and Proteins

Lipids

Synthetic Polymers

Filters

Provide an acceptable name for the alkane shown below. CH₃CH₂CH₂CH₂CH₂CH₃

Provide the IUPAC name of (CH₃CH₂)₃CH.

A branched alkane has boiling point relative to the isomeric linear alkane. There are London force interactions in the branched alkane.