Quiz Submissions – Exam #2
Kelly Johnson (username: 75KJ922478)
Attempt 1
Written: Jun 15, 2020 12:00 PM – Jun 15, 2020 1:30 PM
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Chapter_02_Alkanes_and_Cycloalkanes
Question 1
0 / 3 points
Which of the following is the most stable conformation of cis-1-isopropyl-3-methylcyclohexane?
Question options:
2
1
3
4
Question 2
What is the IUPAC name of the following compound?
Question options:
cis-1-tert-butyl-2-methylcyclopentane
trans-1-tert-butyl-2-methylcyclopentane
trans-1-isopropyl-4-methylcyclopentane
cis-1-isopropyl-2-methylcyclopentane
Question 3
Which of the following compounds can adopt a chair conformation in which there are no axial methyl
groups?
Question options:
trans-1,3-dimethylcyclohexane
cis-1,2-dimethylcyclohexane
cis-1,4-dimethylcyclohexane
cis-1,3-dimethylcyclohexane
Question 4
Which of the following undergoes the most exothermic combustion?
Question options:
octane
2-methylheptane
2,2,3,3-tetramethylbutane
2,2-dimethylhexane
Question 5
Which of the following cycloalkanes has the largest heat of combustion per carbon atom?
Question options:
cyclohexane
cycloheptane
cyclopentane
cyclopropane
Question 6
Which of the following substituted cyclohexanes has the greatest energy for ring flipping from the
conformation in which the substituent is axial to the one where it is equatorial?
Question options:
ethylcyclohexane
methylcyclohexane
fluorocyclohexane
tert-butylcyclohexane
Question 7
The Newman projection of the gauche conformation of 1,2-dichloroethane is shown below.
Question options:
True
False
Question 8
The most stable conformation of an alkane occurs when carbon−carbon bonds are staggered and bulky
groups are anti.
Question options:
True
False
Question 9
The following pairs of Newman projections represent the same compound but in differing conformations.
Question options:
True
False
Question 10
The following Newman projection represents 2-methylhexane.
Question options:
True
False
Question 11
The following structures represent, from left to right, a cis and a trans isomer.
Question options:
True
False
Question 12
Match the Newman projection for the conformation of 2-methylbutane to the indicated position on the
potential energy diagram.
A
B
C
D
Conformation A is represented by Roman numeral ____.
Question 13
3 / 3 points
