Question 1

List three commercial products which are composed primarily of alkanes.

Accepted Answer

natural gas, gasoline, kerosene, heating oil, lubricating oil, liquefied petroleum gas, jet fuel, diesel oil, petroleum jelly

Question 2

Draw an acceptable structure for 4-ethyl-6-(1,2-dimethylpropyl)decane.

Accepted Answer

The answer of Draw an acceptable structure for 4-ethyl-6-(1,2-dimethylpropyl)decane....

Question 3

If a hydrocarbon has no double or triple bonds, it is said to be ________.

Accepted Answer

saturated

Question 4

Draw the most stable conformation of trans-1,2-dimethylcyclohexane.

Accepted Answer

The answer of Draw the most stable conformation of trans-1,2-dimethylcyclohexane....

Question 5

Provide the IUPAC name of (CH3CH2)3CH.

Accepted Answer

Question 6

In the boat conformation of cyclohexane, the "flagpole" hydrogens are located:

Accepted Answer

A)  on the same carbon. 
B)  on adjacent carbons. 
C)  on C-1 and C-3. 
D)  on C-1 and C-4. 
E)  none of the above 
A)  on the same carbon. 
B)  on adjacent carbons. 
C)  on C-1 and C-3. 
D)  on C-1 and C-4. 
E)  none of the above

Question 7

Which of the statements below accurately describe(s) alkanes?

Accepted Answer

A)  Alkanes are hydrocarbons which contain only single bonds. 
B)  Alkanes belong to the class of unsaturated hydrocarbons. 
C)  Alkanes are the simplest and least reactive class of organic compounds. 
D)  both A and B 
E)  both A and C 
A)  Alkanes are hydrocarbons which contain only single bonds. 
B)  Alkanes belong to the class of unsaturated hydrocarbons. 
C)  Alkanes are the simplest and least reactive class of organic compounds. 
D)  both A and B 
E)  both A and C

Question 8

If a monocyclic alkane hydrocarbon contains n carbon atoms, how many hydrogen atoms must it also contain?

Accepted Answer

A)  n 
B)  2n 
C)  n + 2 
D)  2n + 2 
E)  n - 2 
A)  n 
B)  2n 
C)  n + 2 
D)  2n + 2 
E)  n - 2

Question 9

Identify the correct IUPAC name for the following structures.

Accepted Answer

A)  4-(2-iodo-1-methylethyl)-3-methylheptane 
B)  3-s-butyl-1-iodo-2-methylhexane 
C)  1-iodo-2,4-dimethyl-3-propylhexane 
D)  2,4-dimethyl-1-iodo-3-propylhexane 
A)  4-(2-iodo-1-methylethyl)-3-methylheptane 
B)  3-s-butyl-1-iodo-2-methylhexane 
C)  1-iodo-2,4-dimethyl-3-propylhexane 
D)  2,4-dimethyl-1-iodo-3-propylhexane

Question 10

Draw the most stable conformation of trans-1-tert-butyl-3-ethylcyclohexane.

Accepted Answer

The answer of Draw the most stable conformation of trans-1-tert-butyl-3-ethylcyclohexane....

Question 11

Which of the following correctly ranks the cycloalkanes in order of increasing ring strain per methylene?

Accepted Answer

A)  cyclopropane < cyclobutane < cyclohexane < cyclopentane 
B)  cyclohexane < cyclopentane < cyclobutane < cyclopropane 
C)  cyclohexane < cyclobutane < cyclopentane < cyclopropane 
D)  cyclopentane < cyclopropane < cyclobutane < cyclohexane 
E)  cyclopropane < cyclopentane < cyclobutane < cyclohexane 
A)  cyclopropane < cyclobutane < cyclohexane < cyclopentane 
B)  cyclohexane < cyclopentane < cyclobutane < cyclopropane 
C)  cyclohexane < cyclobutane < cyclopentane < cyclopropane 
D)  cyclopentane < cyclopropane < cyclobutane < cyclohexane 
E)  cyclopropane < cyclopentane < cyclobutane < cyclohexane

Question 12

A branched alkane generally melts at a ________ temperature than the n-alkane containing the same number of carbons.

Accepted Answer

The answer of A branched alkane generally melts at a...

Question 13

Name the haloalkane shown.
CH3CH2C(CH3)2CH2CH2I

Accepted Answer

1-iodo-3,3

Question 14

The structure below is a potent analgesic agent (pain reliever) (J. Med. Chem., $\textbf{      2009   }$ , 5685). How many secondary carbons are in this structure?

Accepted Answer

A)  2 
B)  4 
C)  6 
D)  12 
A)  2 
B)  4 
C)  6 
D)  12

Question 15

Draw the most stable conformation of trans-decalin.

Accepted Answer

The answer of Draw the most stable conformation of trans-decalin....

Question 16

Provide an acceptable name for the alkane shown below.

Accepted Answer

5-sec-butyl-2,2-dime

Question 17

Provide an acceptable name for (CH3CH2CH2)3CH.

Accepted Answer

Question 18

What is the major constituent of natural gas?

Accepted Answer

A)  octane 
B)  butane 
C)  propane 
D)  ethane 
E)  methane 
A)  octane 
B)  butane 
C)  propane 
D)  ethane 
E)  methane

Question 19

The structures below are:

Accepted Answer

A)  not isomers. 
B)  conformational isomers. 
C)  cis-trans isomers. 
D)  structural isomers. 
E)  both B and D 
A)  not isomers. 
B)  conformational isomers. 
C)  cis-trans isomers. 
D)  structural isomers. 
E)  both B and D

Question 20

Draw a Newman projection of the most stable conformation of 2-methylpropane.

Accepted Answer

The answer of Draw a Newman projection of the most...

Exam 3: Structure and Stereochemistry of Alkanes

List three commercial products which are composed primarily of alkanes.

Draw an acceptable structure for 4-ethyl-6-(1,2-dimethylpropyl)decane.

If a hydrocarbon has no double or triple bonds, it is said to be ________.

Draw the most stable conformation of trans-1,2-dimethylcyclohexane.

Provide the IUPAC name of (CH3CH2)3CH.

In the boat conformation of cyclohexane, the "flagpole" hydrogens are located:

Which of the statements below accurately describe(s) alkanes?

If a monocyclic alkane hydrocarbon contains n carbon atoms, how many hydrogen atoms must it also contain?

Identify the correct IUPAC name for the following structures.

Draw the most stable conformation of trans-1-tert-butyl-3-ethylcyclohexane.

Which of the following correctly ranks the cycloalkanes in order of increasing ring strain per methylene?

A branched alkane generally melts at a ________ temperature than the n-alkane containing the same number of carbons.

Name the haloalkane shown. CH3CH2C(CH3)2CH2CH2I

The structure below is a potent analgesic agent (pain reliever) (J. Med. Chem., 2009 \textbf{ 2009 } 2009 , 5685). How many secondary carbons are in this structure?

Draw the most stable conformation of trans-decalin.

Provide an acceptable name for the alkane shown below.

Provide an acceptable name for (CH3CH2CH2)3CH.

What is the major constituent of natural gas?

The structures below are:

Draw a Newman projection of the most stable conformation of 2-methylpropane.

Introduction and Review

Structure and Properties of Organic Molecules

The Study of Chemical Reactions

Stereochemistry

Alkyl Halides: Nucleophilic Substitution and Elimination

Structure and Synthesis of Alkenes

Reactions of Alkenes

Alkynes

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 the IUPAC name of (CH₃CH₂)₃CH.

Name the haloalkane shown. CH₃CH₂C(CH₃)₂CH₂CH₂I

Provide an acceptable name for (CH₃CH₂CH₂)₃CH.