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ykKLsuWl.jpgVcxyQ-jZ.jpgTgs3_NZ2.jpgs3MgDC1b.jpglvx_Nh4m.jpgCoDplODP.jpgC0N-wMJA.jpg3OsSVSkH.jpg

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d @ Texas Tech University | Blackboard @ Texas Tech University | TTU
Take Test: Quiz 2 - Summer 2020 TTU - Organic Chemistry ...
Question Completion Status:
3-ethyl-1,4,5-trimethylcycloheptane
3-ethyl-1,2,5-trimethylcycloheptane
QUESTION 4
2 points
Save Answer
Which of the following chair conformations of methylcyclohexane, shown below, has the methyl substituent in an
equatorial position?
A )
B )
C)
D)
OA
OB
OC
OD
QUESTION 5
2 points
Save Answer
Consider the compound below left, in the given conformation. From the perspective shown (sighting along the labeled
C2 - C3 bond axis), which of the following is the corresponding Newman projection?
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C0N-wMJA.jpg
Identify the name below that is a correct IUPAC name. (hint: draw each structure)
2-isopropylpropane
2-isopropylbutane
1,1,1,2,2,2-hexamethylethane
2,2,3-trimethylbutane
QUESTION 10
2 p
Which of the following conformations is the lowest energy conformation of the given dimethylcyclohexane structure?
A)
B)
C)
D)
OA
OB
OC
OD
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Take Test: Quiz 2 - Summer 2020 TTU - Organic Chemistry ...
Question Completion Status:
OD
QUESTION 5
2 points
Save Answer
Consider the compound below left, in the given conformation. From the perspective shown (sighting along the labeled
C2 - C3 bond axis), which of the following is the corresponding Newman projection?
A)
H3C CI
B)
H3 C CI
C)
H3 C C
D)
H3C CI
H3C-
CH 3
H-
CH3
H3 C
QA
OB
OC
OD
QUESTION 6
2 points
Save Answer
Which of the following represents the given structure after a "ring-flip"?
A )
B )
c) M
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lvx_Nh4m.jpg
Attu.blackboard.com
C
iversity | Blackboard @ Texas Tech University | TTU
Take Test: Quiz 2 - Summer 2020 TTU - Organic Chemistry ...
Question Completion Status:
QUESTION 8
2 points
Consider the combustion (reaction with O2) of two different isomeric hydrocarbons, X and Y. If X is less stable than Y,
what is true of the combustion reactions?
O the combustion of X is less endothermic than the combustion of Y
the combustion of X is more endothermic than the combustion of Y
O the combustion of X is less exothermic than the combustion of Y
the combustion of X is more exothermic than the combustion of Y
QUESTION 9
2 poir
Identify the name below that is a correct IUPAC name. (hint: draw each structure)
2-isopropylpropane
2-isopropylbutane
O 1,1,1,2,2,2-hexamethylethane
O 2,2,3-trimethylbutane
2 poi
QUESTION 10
s3MgDC1b.jpg
Tech University | TTU
Question Completion Status:
Take Test: Quiz 2 - Summer 2020 TTU - Organic Chemistry
DA
OB
OC
OD
QUESTION 6
2 points
Which of the following represents the given structure after a "ring-flip"?
A)
B)
c)
D)
A
OB
OC
OD
QUESTION 7
2 points
Of the conformations of 2,3-dimethylbutane shown below, what is the difference in stability between the most stable and
the second-most stable conformations?
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Take Test: Quiz 2 - Summer 2020 TTU . Organic Chemistry-
w. Question Completion Status:
2,3,3-trimethylpentane
QUESTION 3
2 points
Save Anson
Select the IUPAC-name for the compound below.
1-ethyl-2,3,6-trimethylcycloheptane
1-ethyl-3,6,7-trimethylcycloheptane
3-ethyl-1,4,5-trimethylcycloheptane
3-ethyl-1,2,5-trimethylcycloheptanc
QUESTION 4
2 points
Save Any
Which of the following chair conformations of methylcyclohexane, shown below, has the methyl substituent in an
equatorial position?
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Save and Sub
VcxyQ-jZ.jpg
OB
OC
OD
QUESTION 7
2
Of the conformations of 2,3-dimethylbutane shown below, what is the difference in stability between the most stable and
the second-most stable conformations?
Gauche CH3,CH3 (3.8 kJ/mol)
Eclipsed H,H
CH3
CH 3
H3C
CH3
Eclipsed H, CH3
(4.0 kJ/mol)
H
(6.0 KJ/mol)
H-
H3C.
Eclipsed CH3, CH3 (11.0 kJ/mol)
Hact
H&C-
CH3
HaC CH3
HH
3.8 kJ/mol
7.6 kJ/mol
15.4 kJ/mol
18.4 kJ/mol
QUESTION 8
2
Consider the combustion (reaction with On) of two different isomeric hydrocarbons. X and Y. If X is less stable than Y.
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Question Completion Status:
Take Test: Quiz 2 - Summer 2020 TTU - Organic Chemistry ...
QUESTION 1
2 points
Save Answer
Identify 5-isopropyl-2,3,4,4-tetramethyloctane amongst the structures below.
A)
B)
D)
OA
OB
OC
OD
QUESTION 2
2 points
Save Answer
Identify the name below that is an incorrect IUPAC name. (hint: draw each structure)
3,3-dimethylhexane
O 2,2,3,3-tetramethylbutane
1,4-dimethylhexane
O 2,3,3-trimethylpentane
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