Question 1

Cis-trans isomers exist for which of the following molecules, all of which have the molecular formula C3H5Br?

Accepted Answer

A)  1-bromopropene 
B)  2-bromopropene 
C)  3-bromopropene 
D)  none of these 
A)  1-bromopropene 
B)  2-bromopropene 
C)  3-bromopropene 
D)  none of these

Question 2

Which of the following is true of ethylene?

Accepted Answer

A)  It is not an important industrial chemical. 
B)  It is present in large amounts in natural gas. 
C)  It is formed by the catalytic hydrogenation of ethane. 
D)  It is produced by heating ethane to around 800-900°C. 
A)  It is not an important industrial chemical. 
B)  It is present in large amounts in natural gas. 
C)  It is formed by the catalytic hydrogenation of ethane. 
D)  It is produced by heating ethane to around 800-900°C.

Question 3

addition of a proton to 2-butene

Accepted Answer

A)  1, 2, 3 
B)  2, 1, 3 
C)  3, 2, 1 
D)  2, 3, 1 
A)  1, 2, 3 
B)  2, 1, 3 
C)  3, 2, 1 
D)  2, 3, 1

Question 4

A molecule that is a hybrid of two or more Lewis contributing structures is called a(n) _____ hybrid.

Accepted Answer

A)  cis-trans 
B)  conformational 
C)  resonance 
D)  ionic 
A)  cis-trans 
B)  conformational 
C)  resonance 
D)  ionic

Question 5

Consider the following structure.   Which of the following correctly applies to this structure?

Accepted Answer

A)  It is called an arene. 
B)  It is classified as an aromatic compound. 
C)  All carbon to carbon bonds are equivalent. 
D)  All hydrogen atoms are equivalent. 
E)  All of these apply to this structure. 
A)  It is called an arene. 
B)  It is classified as an aromatic compound. 
C)  All carbon to carbon bonds are equivalent. 
D)  All hydrogen atoms are equivalent. 
E)  All of these apply to this structure.

Question 6

In alkenes, there are four groups bonded to the carbons that constitute the carbon-carbon double bond. Which of the following situations produces cis-trans isomerism?

Accepted Answer

A)  when all four groups are the same 
B)  when the two groups bonded to each carbon atom are different from one another 
C)  when three of the four groups in an alkene are the same, but the fourth group is different 
D)  none of these 
A)  when all four groups are the same 
B)  when the two groups bonded to each carbon atom are different from one another 
C)  when three of the four groups in an alkene are the same, but the fourth group is different 
D)  none of these

Question 7

Which of the following is not a correct IUPAC name?

Accepted Answer

A)  cis-2,3-dimethylcyclopentene 
B)  cis-3,4-dimethylcyclopentene 
C)  cis-3,5-dimethylcyclopentene 
D)  trans-3,4-dimethylcyclopentene 
A)  cis-2,3-dimethylcyclopentene 
B)  cis-3,4-dimethylcyclopentene 
C)  cis-3,5-dimethylcyclopentene 
D)  trans-3,4-dimethylcyclopentene

Question 8

Which of the following is an appropriate definition of an aromatic compound?

Accepted Answer

A)  any compound that contains one or more benzene-like rings 
B)  any compound that contains one or more six-membered rings 
C)  any compound that contains a single double bond within a six-membered ring 
D)  any compound that contains a six-membered aliphatic ring 
A)  any compound that contains one or more benzene-like rings 
B)  any compound that contains one or more six-membered rings 
C)  any compound that contains a single double bond within a six-membered ring 
D)  any compound that contains a six-membered aliphatic ring

Question 9

Which of the following catalysts are used to produce high-density polyethylene from ethylene?

Accepted Answer

A)  peroxide initiators 
B)  Ziegler-Natta catalysis 
C)  either peroxide initiators or Ziegler-Natta catalysis 
D)  neither peroxide initiators nor Ziegler-Natta catalysis 
A)  peroxide initiators 
B)  Ziegler-Natta catalysis 
C)  either peroxide initiators or Ziegler-Natta catalysis 
D)  neither peroxide initiators nor Ziegler-Natta catalysis

Question 10

By which of the following reactions is 4-nitrobenzoic acid converted to 4-aminobenzoic acid?

Accepted Answer

A)  acid-catalyzed hydration 
B)  nitration 
C)  catalytic hydrogenation 
D)  acid-base reaction 
A)  acid-catalyzed hydration 
B)  nitration 
C)  catalytic hydrogenation 
D)  acid-base reaction

Question 11

Which of the following is the most characteristic reaction of alkenes?

Accepted Answer

A)  addition 
B)  oxidation 
C)  reduction 
D)  substitution 
A)  addition 
B)  oxidation 
C)  reduction 
D)  substitution

Question 12

Which of the following structures represents m-nitrobenzoic acid?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 13

In which of the following compounds is free rotation about all bonds possible?

Accepted Answer

A)  2-butene 
B)  cyclobutane 
C)  butane 
D)  butyne 
A)  2-butene 
B)  cyclobutane 
C)  butane 
D)  butyne

Question 14

Which of the following is true of the IUPAC system of naming alkenes?

Accepted Answer

A)  The alkene is always named based on the shortest carbon chain in a branched structure. 
B)  The position of the double bond is always given the lowest possible number. 
C)  The position and identity of substituents determine the number associated with the position of the double bond. 
D)  None of these are correct. 
A)  The alkene is always named based on the shortest carbon chain in a branched structure. 
B)  The position of the double bond is always given the lowest possible number. 
C)  The position and identity of substituents determine the number associated with the position of the double bond. 
D)  None of these are correct.

Question 15

Which of the following monomers can be used to prepare the given polymer?

Accepted Answer

A)  cis-1-bromopropene 
B)  trans-1-bromopropene 
C)  both cis-1-bromopropene and trans-1-bromopropene 
D)  neither cis-1-bromopropene nor trans-1-bromopropene 
A)  cis-1-bromopropene 
B)  trans-1-bromopropene 
C)  both cis-1-bromopropene and trans-1-bromopropene 
D)  neither cis-1-bromopropene nor trans-1-bromopropene

Question 16

Which of the following attractive forces are found among the molecules of alkenes and alkynes?

Accepted Answer

A)  electromagnetic forces 
B)  London dispersion forces 
C)  nuclear forces 
D)  strong ionic forces 
A)  electromagnetic forces 
B)  London dispersion forces 
C)  nuclear forces 
D)  strong ionic forces

Question 17

To which class of compounds do alkenes and alkynes containing only carbon and hydrogen belong?

Accepted Answer

A)  halogenated compounds 
B)  alcoholic compounds 
C)  aromatic compounds 
D)  unsaturated compounds 
A)  halogenated compounds 
B)  alcoholic compounds 
C)  aromatic compounds 
D)  unsaturated compounds

Question 18

Which of the following compounds with the molecular formula C6H12 has cis and trans isomers?

Accepted Answer

A)  2-methyl-1-pentene 
B)  2-methyl-2-pentene 
C)  3-methyl-2-pentene 
D)  cyclohexane 
A)  2-methyl-1-pentene 
B)  2-methyl-2-pentene 
C)  3-methyl-2-pentene 
D)  cyclohexane

Question 19

Which organic product is formed when benzene reacts with nitric acid in the presence of concentrated sulfuric acid?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 20

What is an acceptable name for the following compound?

Accepted Answer

A)  o-dimethylbenzene 
B)  m-dimethylbenzene 
C)  p-diethylbenzene 
D)  m-diethylbenzene 
A)  o-dimethylbenzene 
B)  m-dimethylbenzene 
C)  p-diethylbenzene 
D)  m-diethylbenzene

Exam 12: Alkenes, Alkynes, and Aromatic Compounds

Cis-trans isomers exist for which of the following molecules, all of which have the molecular formula C3H5Br?

Which of the following is true of ethylene?

addition of a proton to 2-butene

A molecule that is a hybrid of two or more Lewis contributing structures is called a(n) _____ hybrid.

Consider the following structure. Which of the following correctly applies to this structure?

In alkenes, there are four groups bonded to the carbons that constitute the carbon-carbon double bond. Which of the following situations produces cis-trans isomerism?

Which of the following is not a correct IUPAC name?

Which of the following is an appropriate definition of an aromatic compound?

Which of the following catalysts are used to produce high-density polyethylene from ethylene?

By which of the following reactions is 4-nitrobenzoic acid converted to 4-aminobenzoic acid?

Which of the following is the most characteristic reaction of alkenes?

Which of the following structures represents m-nitrobenzoic acid?

In which of the following compounds is free rotation about all bonds possible?

Which of the following is true of the IUPAC system of naming alkenes?

Which of the following monomers can be used to prepare the given polymer?

Which of the following attractive forces are found among the molecules of alkenes and alkynes?

To which class of compounds do alkenes and alkynes containing only carbon and hydrogen belong?

Which of the following compounds with the molecular formula C6H12 has cis and trans isomers?

Which organic product is formed when benzene reacts with nitric acid in the presence of concentrated sulfuric acid?

What is an acceptable name for the following compound?

Matter, Energy, and Measurement

Atoms

Chemical Bonds

Chemical Reactions

Gases, Liquids, and Solids

Solutions and Colloids

Reaction Rates and Chemical Equilibrium

Acids and Bases

Nuclear Chemistry

Organic Chemistry

Alkanes

Alcohols, Ethers, and Thiols

Chirality: the Handedness of Molecules

Amines

Aldehydes and Ketones

Carboxylic Acids

Carboxylic Anhydrides, Esters, and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Chemical Communications: Neurotransmitters and Hormones

Nucleotides, Nucleic Acids, and Heredity

Gene Expression and Protein Synthesis

Bioenergetics: How the Body Converts Food to Energy

Specific Catabolic Pathways: Carbohydrate, Lipid, and Protein Metabolism

Biosynthetic Pathways

Nutrition

Immunochemistry

Body Fluids

Filters

Cis-trans isomers exist for which of the following molecules, all of which have the molecular formula C₃H₅Br?

Which of the following compounds with the molecular formula C₆H₁₂ has cis and trans isomers?