Organic Chemistry 11th Edition Test Bank

Name: Organic Chemistry 11th Edition Test Bank
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Author: Andrew Taylor

Review for your exam confidently with Organic Chemistry 11th Edition Test Bank, a guide designed to cover key topics and test your knowledge.

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Package title: Solomons Test Bank
Course Title: Solomons 11e
Chapter Number: 1
Question type: Multiple choice
1) Which of the following best describes the origin of carbon atoms?
a) The Big Bang
b) amino acids found on meteorites
c) byproduct of chemical fusion in stars
d) gradual decay of radioactive isotopes of nitrogen
e) All of these choices.
Answer: C
Topic: General
Section: 1.1
Difficulty Level: Easy
2) Credit for the first synthesis of an organic compound from an inorganic precursor is usually
given to ___.
a) Berzelius
b) Arrhenius
c) Kekule
d) Wohler
d) Lewis
Answer: D
Topic: General
Section: 1.1
Difficulty Level: Easy
3) The greatest degree of ionic character is anticipated for the bond between
a) H and C.
b) H and Cl.
c) C and Cl.
d) H and Br.
e) Br and Cl.
1

Answer: B
Topic: Atomic Orbitals, Periodic Trends, Electronegativity
Section: 1.3
Difficulty Level: Easy
4) Select the least electronegative element from the list below.
a) P
b) N
c) Mg
d) Si
e) K
Answer: e
Topic: Periodic Trends, Electronegativity
Section: 1.3
Difficulty Level: Easy
5) Select the most electronegative element from the list below.
a) H
b) O
c) N
d) B
e) C
Answer: B
Topic: Periodic Properties, Electronegativity
Section: 1.3
Difficulty Level: Easy
6) Which of these substances contain both covalent and ionic bonds?
a) NH4 Cl
b) H2 O2
c) CH4
d) HCN
e) H2 S
Answer: A
2

Topic: Bonding
Section: 1.3
Difficulty Level: Medium
7) Which type of bonding is present in the compound CH3 Li?
a) Ionic bonding
b) Covalent bonding
c) Hydrogen bonding
d) Ionic and Covalent bonding
e) Ionic, Covalent, and Hydrogen bonding
Answer: D
Topic: Bonding
Section 1.3
Difficulty Level: Medium
8) Which of the following is the Lewis structure for CH3 CH2 O2 H?
a)
H C C
H
H H
O O
H
H
b)
H C O
H
H
C O H
H
c)
H C C
H
H O
O H
H
H
d)
H C O
H
H
C O H
H
H
e) None of these choices.
Answer: A
Topic: Lewis Structures
Section: 1.4
Difficulty Level: Medium
9) In which of the following does the central atom have 2 pairs of non-bonding electrons?
3

a) O3
b) CO2
c) CO3 2−
d) NH4+
e) H2 S
Answer: E
Topic: Lewis Structures
Section: 1.4
Difficulty Level: Medium
10) Which is NOT a correct Lewis structure?
a)
NH F
H
. .
. . :
b)
CH F
H
H
:
..
..
c) OH O
. .
. . H
. .
. .
d) O
BO
O
. .
. .
:
:
. .
. .H
H
H
e) None of these choices.
Answer: A
Topic: Lewis Structures, Formal Charges
Section: 1.4
Difficulty Level: Medium
11) Which of these is a correct electron-dot representation of the nitrite ion, NO2-
?
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Topic: Lewis Structures
Section: 1.4
Difficulty Level: Hard
13) Considering Lewis structures, which of these compounds possesses a single unpaired
electron?
a) N2
b) N2 O
c) NO
d) N2 O4
e) O2
Answer: C
Topic: Lewis Structures
Section: 1.4
Difficulty Level: Hard
14) Y
Z
Y
..
.. is a generalized structural representation which can be used for all of the
following, except:
a) H2 O
b) H2 O
c) H2 S
d) BeH2
e) There is no exception.
Answer: D
Topic: Lewis Structures
Section: 1.4
Difficulty Level: Hard
15) Expansion of the valence shell to accommodate more than eight electrons is possible with
___.
a) fluorine
b) nitrogen
c) carbon
d) sulfur
e) beryllium
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Answer: D
Topic: Lewis Structures, Formal Charges
Section: 1.2, 1.4
Difficulty Level: Easy
16) What is the formal charge on oxygen in the following structure?
H 3 CC O
a) +2
b) +1
c) 0
d) -1
e) -2
Answer: B
Topic: Lewis Structures, Formal Charges
Section: 1.5
Difficulty Level: Easy
17) What is the formal charge on carbon in the following structure?
a) +2
b) +1
c) 0
d) -1
e) -2
Answer: C
Topic: Lewis Structures, Formal Charges
Section: 1.5
Difficulty Level: Easy
18) In which structure(s) below does the oxygen have a formal charge of +1?
OC HHOHOH H
H
OH 3 C C 3
CH 3
II III IVI
. .. .. .. . :. .
H
H
s
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a) I only
b) II only
c) I and III
d) I and IV
e) I, III, and IV
Answer: E
Topic: Lewis Structures, Formal Charges
Section: 1.5
Difficulty Level: Easy
19) Which structure(s) contain(s) an oxygen that bears a formal charge of +1?
OH3C CH3
CH3
IV
OH3C H
H
III
OCO
II
O
CH
O
I
O
C
O
O
V
. .. .. .:: . .
. .
. .
::
:
. .
. .
::
:
. . ::
a) I and II
b) III and IV
c) V
d) II
e) I and V
Answer: B
Topic: Lewis Structures, Formal Charges
Section: 1.5
Difficulty Level: Easy
20) Which of the following compounds contain a sulfur atom that bears a +1 formal charge?
a) H2 S
b) SO2
c) SF 6
d) MgSO4
e) H2 SO4
Answer: B
Topic: Lewis Structures, Formal Charges
Section: 1.5
Difficulty Level: Medium
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21) Which of the following molecules or ions has a nitrogen with a formal charge of -1?
a)
N H
H
. .
:
b)
NH H
H
. .
c)
NH C 3
H
. . H
d)
NH 3 C C 3
H
. . H
e) CH 3C N :
Answer: A
Topic: Lewis Structures, Formal Charges
Section: 1.5
Difficulty Level: Easy
22) In which structure(s) below does nitrogen have a formal charge of +1?
NH 3C C 3
CH3
NH3 C CH2
H
NH3 C H NH 2H 3C
IVIIIIII V
N
H
OH
H
. .. . . .
. .
. . . .
. . H
a) I
b) II and IV
c) III and V
d) I and V
e) V
Answer: A
Topic: Lewis Structures, Formal Charges
Section: 1.5
Difficulty Level: Easy
23) Which of the following is an ion with a negative one charge?
a) OH3C
. . :. .
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b) ONO . . :: . .
. .
. .
c) O
NO
O
. .
. .
::
: :
: . .
d) All of these choices.
e) None of these choices.
Answer: D
Topic: Lewis Structures, Formal Charges
Section: 1.5
Difficulty Level: Easy
24) Wha is the formal charge on oxygen in the following structure?t
OH3 C C 3
CH3
. . H
a) +2
b) +1
c) 0
d) -1
e) -2
Answer: B
Topic: Lewis Structures, Formal Charges
Section: 1.5
Difficulty Level: Easy
25) Listed below are electron dot formulas for several simple molecules and ions. All valence
electrons are shown; however, electrical charges have been omitted deliberately.
H H H H
HH
I II III IV V
H : Be : H H : B : H H : N : H H : N : H H : O : H
. .. .. .. .
. . . . . . . .
Which of the structures actually bear(s) a positive charge?
a) I
b) II
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c) III
d) III and V
e) IV and V
Answer: E
Topic: Lewis Structures, Formal Charges
Section: 1.5
Difficulty Level: Easy
26) Listed below are electron dot formulas for several simple molecules and ions. All valence
electrons are shown; however, electrical charges have been omitted deliberately.
H H H H
HH
I III III
H : Be : H H : B : H H : N : H H : N : H H : O : H
. .. .. .. .
. . . . . . . .
V V
Which of the structures is negatively charged?
a) I
b) II
c) III
d) IV
e) V
Answer: B
Topic: Lewis Structures, Formal Charges
Section: 1.5
Difficulty Level: Easy
27) The formal charge on sulfur in sulfuric acid is:
SO O
O
O
H H
a) 0
b) -1
c) +1
d) -2
e) +2
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Answer: A
Topic: Lewis Structures, Formal Charges
Section: 1.5
Difficulty Level: Easy
28) In which of these cases does the central atom have a zero formal charge?
a) HFH
b) OH 3 C C 3
H
H
c)
BF F
F
F
d)
NH 3 C C 3
H
H
H
e)
CH3C C 3
CH3
CH3
H
Answer: E
Topic: Lewis Structures, Formal Charges
Section: 1.5
Difficulty Level: Medium
29) Which compound contains a nitrogen atom with a formal positive charge?
H
N N
N
I II III
a) I
b) II
c) III
d) More than one of these choices.
e) None of these choices.
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Answer: D
Topic: Lewis Structures, Formal Charges
Section: 1.5
Difficulty Level: Medium
30) Which of the following is a set of constitutional isomers?
Br Br
Br
Br
IVIIIIII
a) I and II
b) II and III
c) I, II, and III
d) II, III, and IV
e) I, III, and IV
Answer: E
Topic: Isomerism
Section: 1.6
Difficulty Level: Easy
31) CH3 CH2 OCH2 CH3 and CH3 CH2 CH2 CH2 OH are examples of what are now termed:
a) Conformational isomers
b) Resonance structures
c) Functional isomers
d) Empirical isomers
e) Constitutional isomers
Answer: E
Topic: Isomerism
Section: 1.6
Difficulty Level: Easy
32) Which of the following structures represent compounds that are constitutional isomers of
each other?
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IIIIII IV
a) I and II
b) I and III
c) I, II, and III
d) I, II, III, and IV
e) II and III
Answer: C
Topic: Isomerism
Section: 1.6
Difficulty Level: Easy
33) Which compound is not a constitutional isomer of the others?
I IIIII IV
N O O
N
H
NO
N
O
a) I
b) II
c) III
d) IV
e) All of these choices are isomers of each other.
Answer: D
Topic: Isomerism
Section: 1.6
Difficulty Level: Easy
34) Consider the following:
CH3 CH2 CH=CHCH2 CH 3 CH3 CH2 CH 2 CH2 CH=CH2
I II
CH3 CH=CHCH2 CH2 CH 3 CH2 =CHCH 2 CH2 CH2 CH3
III IV
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Which two structures represent the same compound?
a) I and II
b) II and III
c) I and III
d) II and IV
e) None of these choices.
Answer: D
Topic: Isomerism
Section: 1.6
Difficulty Level: Easy
35) Which of the following represent a pair of constitutional isomers?
a) and
b) CH3 CH=CH2 and CH 2 =CHCH3
c)
H
Br
Br
H
Br
Br
H
H
and
d)
Br
Br
H
H
H
Br
H
Br
and
e) More than one of these choices.
Answer: E
Topic: Isomerism
Section: 1.6
Difficulty Level: Easy
36) Which of the following represent pairs of constitutional isomers?
a)
OH
O O
O
and
b)
H
CH3
Br
H
Br
CH 3
H
H
and
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