Question 1

Gasoline additives such as ethanol are employed to ________

Accepted Answer

A)   decrease odor.
B)   promote complete combustion.
C)   decrease octane rating.
D)   make the fuel less volatile.
E)   increase fuel value.F) All of the above
G) B) and D)

Question 2

Which of the following structures represents cyclohexene?

Accepted Answer

A)   
B)   
C)   
D)   E) A) and B)
F) None of the above

Question 3

Alcohols used as a gasoline additive or substitute are often called biofuels. Similar organic compounds derived from vegetable oils and fats are called biodiesels, which are not alcohols but another class of organic chemicals called esters. Qualitatively compare the combustion energy content (kJ/g)  of the four-carbon alcohol, butanol (CH3CH2CH2CH2OH) , with the energy content (kJ/g)  of the four-carbon ester, ethyl acetate (CH3COOCH2CH3) .

Accepted Answer

A)   Ethyl acetate has less energy/mass than butanol.
B)   Ethyl acetate has more energy/mass than butanol.
C)   The two compounds have roughly the same energy/mass.
D)   These are not two different compounds and so must have the same energy/mass.
E)   There is no basis for determining this without some form of enthalpy values.F) C) and D)
G) A) and B)

Question 4

Rank the following according to their fuel values in order of increasing energy/mass.
C8H18; CO; CH3OH; CH3OCH3

Accepted Answer

A)   CO < CH3OCH3 < CH3OH < C8H18
B)   CH3OCH3 < CO < CH3OH < C8H18
C)   CO < CH3OH < CH3OCH3 < C8H18
D)   C8H18 < CO < CH3OH < CH3OCH3
E)   C8H18 < CH3OCH3 < CH3OH < COF) A) and E)
G) A) and D)

Question 5

How many structural isomers (also called constitutional isomers)  are there for propylene, and why?

Accepted Answer

A)   two, because of resonance
B)   two, because of geometrical isomerism
C)   two, because the double bond can be in either one of two locations
D)   none, because the two skeletal structures can be superimposed
E)   none, because double bonds always occur on the right in alkenesF) A) and E)
G) A) and C)

Question 6

A compound composed solely of carbon and hydrogen that is unsaturated must be ________

Accepted Answer

A)   an alkane.
B)   an alkene.
C)   an alkyne.
D)   either an alkane or an alkene.
E)   either an alkene or an alkyne.F) C) and D)
G) B) and E)

Question 7

Draw and name all of the isomers for C4H8.

Accepted Answer

<img  loading="lazy" src="/assets/images/blured-textbook.svg" class="d-inline m-1" alt="blured image" width="139" height="30"> 1-butene; 2-butene ...

Question 8

An alkyne is characterized by a ________ bond between carbon atoms that have a ________ local molecular geometry and ________ hybridization.

Accepted Answer

A)   single; linear; sp
B)   single; linear; sp3
C)   double; trigonal planar; sp2
D)   double; tetrahedral; sp3
E)   triple; linear; spF) B) and D)
G) C) and E)

Question 9

The C-O-C bonding arrangement is called the ________ functional group.

Accepted Answer

A)   alcohol
B)   ester
C)   amine
D)   ether
E)   carbonylF) B) and C)
G) A) and D)

Question 10

Name the compound with the structural formula CH3(CH2) 16CH3.

Accepted Answer

A)   n-octane
B)   n-hexadecane
C)   n-octadecane
D)   n-decane
E)   1,16-dimethylhexadecaneF) A) and B)
G) D) and E)

Question 11

The monomer for polystyrene is shown below. Which of the bonds is involved in the polymerization process?

Accepted Answer

A)   I only
B)   II only
C)   III only
D)   IV only
E)   Bonds I-IV are all involved in polymerization.F) A) and C)
G) None of the above

Question 12

The C-C-C bond angles in octane (CH3CH2CH2CH2CH2CH2CH2CH3)  are ________

Accepted Answer

A)   180°.
B)   120°.
C)   90°.
D)   109.5°.
E)   60°.F) C) and D)
G) All of the above

Question 13

Delocalized bonding in aromatic hydrocarbons is possible because of ________

Accepted Answer

A)   the fact that electrons can move very quickly from one resonance form to another.
B)   adjacent 2pz orbitals each having one electron.
C)   Wade's rules.
D)   double-headed arrows.
E)   Cooper pairs.F) A) and B)
G) B) and E)

Question 14

What is the molecular formula for the following compound? 4H5O2 B)  C4H6O2 C)  C4H7O2 D)  C4H8O2 E)  C4H10O2" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   C4H5O2
B)   C4H6O2
C)   C4H7O2
D)   C4H8O2
E)   C4H10O2F) B) and D)
G) B) and E)

Question 15

The characteristic "fishy" odor comes from methylamine (CH3NH2) , which is similar to ammonia (NH3)  in structure and also in its ability to react with acids as a weak base. Why would the acid form of methylamine not have as strong an odor as methylamine?

Accepted Answer

A)   because it would decompose to methane and ammonia
B)   because it would not be volatile as a polyatomic ion
C)   because it would melt in the acid
D)   because it would decompose to carbon, hydrogen, and nitrogen
E)   because it would have a different three-dimensional structureF) B) and D)
G) C) and D)

Question 16

What is the molecular formula for the compound illustrated below? 5H7 B)  C5H8 C)  C5H9 D)  C5H10 E)  C5H5" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   C5H7
B)   C5H8
C)   C5H9
D)   C5H10
E)   C5H5F) C) and D)
G) A) and B)

Question 17

A hydrocarbon is a compound that contains ________

Accepted Answer

A)   carbon with hydrogen and oxygen in the ratio 2:1.
B)   carbon with hydrogen and oxygen in any ratio.
C)   only carbon and hydrogen.
D)   carbon, hydrogen, and any functional groups.
E)   carbon and any other elements.F) A) and B)
G) A) and E)

Question 18

What are the similarities and differences between structural (constitutional) isomers, geometric (stereo) isomers, and optical isomers?

Accepted Answer

The molecules that comprise structural, ...

Question 19

A subunit of an organic compound that confers particular chemical and physical properties is termed ________

Accepted Answer

A)   a monomer.
B)   an oligomer.
C)   a functional group.
D)   a synthetic unit.
E)   an isomer.F) A) and B)
G) All of the above

Question 20

Which of these is not a condensation polymer?

Accepted Answer

A)   spandex
B)   nylon
C)   PETE
D)   poly(propylene) 
E)   polyesterF) A) and B)
G) D) and E)

Exam 13: Organic Chemistry: Fuels, Pharmaceuticals, Materials, and Life

Draw and name all of the isomers for C₄H₈.

Correct Answer
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1-butene; 2-butene ...
View Answer

Correct Answer
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The C-C-C bond angles in octane (CH₃CH₂CH₂CH₂CH₂CH₂CH₂CH₃) are ________

Correct Answer
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A subunit of an organic compound that confers particular chemical and physical properties is termed ________

Correct Answer
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Which of the following structures represents cyclohexene?

Correct Answer
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How many structural isomers (also called constitutional isomers) are there for propylene, and why?

Correct Answer
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Rank the following according to their fuel values in order of increasing energy/mass. C₈H₁₈; CO; CH₃OH; CH₃OCH₃

Correct Answer
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A compound composed solely of carbon and hydrogen that is unsaturated must be ________

Correct Answer
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What is the molecular formula for the compound illustrated below?

Correct Answer
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What is the molecular formula for the following compound?

Correct Answer
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The characteristic "fishy" odor comes from methylamine (CH₃NH₂) , which is similar to ammonia (NH₃) in structure and also in its ability to react with acids as a weak base. Why would the acid form of methylamine not have as strong an odor as methylamine?

Correct Answer
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The C-O-C bonding arrangement is called the ________ functional group.

Correct Answer
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The monomer for polystyrene is shown below. Which of the bonds is involved in the polymerization process?

Correct Answer
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A hydrocarbon is a compound that contains ________

Correct Answer
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Which of these is not a condensation polymer?

Correct Answer
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What are the similarities and differences between structural (constitutional) isomers, geometric (stereo) isomers, and optical isomers?

Correct Answer
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The molecules that comprise structural, ...
View Answer

Name the compound with the structural formula CH₃(CH₂) ₁₆CH₃.

Correct Answer
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Gasoline additives such as ethanol are employed to ________

Correct Answer
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Delocalized bonding in aromatic hydrocarbons is possible because of ________

Correct Answer
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An alkyne is characterized by a bond between carbon atoms that have a local molecular geometry and hybridization.

Correct Answer
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Exam 13: Organic Chemistry: Fuels, Pharmaceuticals, Materials, and Life

Draw and name all of the isomers for C4H8.

Correct Answerverified 1-butene; 2-butene ...View AnswerShow Answer

Correct AnswerverifiedShow Answer

The C-C-C bond angles in octane (CH3CH2CH2CH2CH2CH2CH2CH3) are ________

Correct AnswerverifiedShow Answer

A subunit of an organic compound that confers particular chemical and physical properties is termed ________

Correct AnswerverifiedShow Answer

Which of the following structures represents cyclohexene?

Correct AnswerverifiedShow Answer

How many structural isomers (also called constitutional isomers) are there for propylene, and why?

Correct AnswerverifiedShow Answer

Rank the following according to their fuel values in order of increasing energy/mass. C8H18; CO; CH3OH; CH3OCH3

Correct AnswerverifiedShow Answer

A compound composed solely of carbon and hydrogen that is unsaturated must be ________

Correct AnswerverifiedShow Answer

What is the molecular formula for the compound illustrated below?

Correct AnswerverifiedShow Answer

What is the molecular formula for the following compound?

Correct AnswerverifiedShow Answer

The characteristic "fishy" odor comes from methylamine (CH3NH2) , which is similar to ammonia (NH3) in structure and also in its ability to react with acids as a weak base. Why would the acid form of methylamine not have as strong an odor as methylamine?

Correct AnswerverifiedShow Answer

The C-O-C bonding arrangement is called the ________ functional group.

Correct AnswerverifiedShow Answer

The monomer for polystyrene is shown below. Which of the bonds is involved in the polymerization process?

Correct AnswerverifiedShow Answer

A hydrocarbon is a compound that contains ________

Correct AnswerverifiedShow Answer

Which of these is not a condensation polymer?

Correct AnswerverifiedShow Answer

What are the similarities and differences between structural (constitutional) isomers, geometric (stereo) isomers, and optical isomers?

Correct AnswerverifiedThe molecules that comprise structural, ...View AnswerShow Answer

Name the compound with the structural formula CH3(CH2) 16CH3.

Correct AnswerverifiedShow Answer

Gasoline additives such as ethanol are employed to ________

Correct AnswerverifiedShow Answer

Delocalized bonding in aromatic hydrocarbons is possible because of ________

Correct AnswerverifiedShow Answer

An alkyne is characterized by a ________ bond between carbon atoms that have a ________ local molecular geometry and ________ hybridization.

Correct AnswerverifiedShow Answer

Draw and name all of the isomers for C₄H₈.

Correct Answer
verified
1-butene; 2-butene ...
View Answer

Correct Answer
verified

The C-C-C bond angles in octane (CH₃CH₂CH₂CH₂CH₂CH₂CH₂CH₃) are ________

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Rank the following according to their fuel values in order of increasing energy/mass. C₈H₁₈; CO; CH₃OH; CH₃OCH₃

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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The characteristic "fishy" odor comes from methylamine (CH₃NH₂) , which is similar to ammonia (NH₃) in structure and also in its ability to react with acids as a weak base. Why would the acid form of methylamine not have as strong an odor as methylamine?

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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The molecules that comprise structural, ...
View Answer

Name the compound with the structural formula CH₃(CH₂) ₁₆CH₃.

Correct Answer
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Correct Answer
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Correct Answer
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An alkyne is characterized by a bond between carbon atoms that have a local molecular geometry and hybridization.

Correct Answer
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