Question 1

Which of the following sets of compounds contain one ether, one alcohol, and one ketone (not necessarily in this order)?

Accepted Answer

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

Question 2

Which of the following is TRUE regarding stereoisomers?

Accepted Answer

A) Stereoisomers differ in the way atoms are connected but have identical spatial orientation of atoms. They can be conformational or configurational. 
B) Stereoisomers differ in the way atoms are connected but have identical spatial orientation of atoms. They can be constitutional or configurational. 
C) Stereoisomers have the same atom connectivity but have different spatial orientation of atoms. They can be constitutional or enantiomeric. 
D) Stereoisomers have the same atom connectivity but have different spatial orientation of atoms. They can be conformational or configurational. 
E) Stereoisomers have the same atom connectivity but have different functional groups on the same positions of the carbon backbone. They can be conformational or configurational. 
A) Stereoisomers differ in the way atoms are connected but have identical spatial orientation of atoms. They can be conformational or configurational. 
B) Stereoisomers differ in the way atoms are connected but have identical spatial orientation of atoms. They can be constitutional or configurational. 
C) Stereoisomers have the same atom connectivity but have different spatial orientation of atoms. They can be constitutional or enantiomeric. 
D) Stereoisomers have the same atom connectivity but have different spatial orientation of atoms. They can be conformational or configurational. 
E) Stereoisomers have the same atom connectivity but have different functional groups on the same positions of the carbon backbone. They can be conformational or configurational.

Question 3

Which of the following structures is S-2-chlorobutane?

Accepted Answer

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

Question 4

Which of the following compounds is a ketone?

Accepted Answer

A)  CH3CH2CH2CO2H 
B)    
C)  CH3CH2NH2 
D)    
E)    
A)  CH3CH2CH2CO2H 
B)    
C)  CH3CH2NH2 
D)    
E)

Question 5

What are constitutional isomers?

Accepted Answer

Constitutional isome

Question 6

Determine the absolute configuration of the molecule shown below:

Accepted Answer

A) S configuration 
B) R configuration 
C) E configuration 
D) Z configuration 
E) d configuration 
A) S configuration 
B) R configuration 
C) E configuration 
D) Z configuration 
E) d configuration

Question 7

Which compound is a saturated hydrocarbon?

Accepted Answer

A) 1-butyne 
B) cycloheptene 
C) 3-methylheptane 
D) 2-heptyne 
A) 1-butyne 
B) cycloheptene 
C) 3-methylheptane 
D) 2-heptyne

Question 8

Which of the following lists the substituents in the order of priority, from highest (priority 1)to lowest (priority 4)?

Accepted Answer

A) -NH2, -C(=O)H, -COOH, -CH3 
B) -CH3, -COOH, -C(=O)H, -NH2 
C) -NH2, -CH3, -C(=O)H, -COOH 
D) -NH2, -COOH, -C(=O)H, -CH3 
E) -NH2, -CH3, -COOH, -C(=O)H 
A) -NH2, -C(=O)H, -COOH, -CH3 
B) -CH3, -COOH, -C(=O)H, -NH2 
C) -NH2, -CH3, -C(=O)H, -COOH 
D) -NH2, -COOH, -C(=O)H, -CH3 
E) -NH2, -CH3, -COOH, -C(=O)H

Question 9

Which of the following compounds exhibits optical isomerism?

Accepted Answer

A) CH3-CH2-CH3 
B) CH3-CH2-CHBr-CH3 
C) CH3-CHCl-CH3 
D) CH3-CH2-CH2Br 
E) CH3-CH2-CBr2-CH3 
A) CH3-CH2-CH3 
B) CH3-CH2-CHBr-CH3 
C) CH3-CHCl-CH3 
D) CH3-CH2-CH2Br 
E) CH3-CH2-CBr2-CH3

Question 10

Why are there so many more carbon compounds than the number of compounds made up of all the rest of the elements combined?

Accepted Answer

Carbon has the ability to form

Question 11

Which of the following statements correctly describes organic halides?

Accepted Answer

A) Organic halides have one or more H atoms substituted by an electronegative atom from group 16 of the periodic table. 
B) Organic halides have one or more C atoms substituted by an electronegative atom from group 17 of the periodic table. 
C) Organic halides have one or more H atoms substituted by an electronegative atom from group 17 of the periodic table. 
D) Organic halides have one or more H atoms substituted by an electropositive atom from group 17 of the periodic table. 
E) Organic halides have one or more H atoms substituted by an electronegative atom from group 7 of the periodic table. 
A) Organic halides have one or more H atoms substituted by an electronegative atom from group 16 of the periodic table. 
B) Organic halides have one or more C atoms substituted by an electronegative atom from group 17 of the periodic table. 
C) Organic halides have one or more H atoms substituted by an electronegative atom from group 17 of the periodic table. 
D) Organic halides have one or more H atoms substituted by an electropositive atom from group 17 of the periodic table. 
E) Organic halides have one or more H atoms substituted by an electronegative atom from group 7 of the periodic table.

Question 12

What is angle strain in cycloalkanes?

Accepted Answer

A) Angle strain is the angle between carbon bonds on the outer side of a cycloalkane ring. 
B) Angle strain is the difference between an ideal bond angle for sp3 hybridized carbon atoms and the actual bond angle in the ring. 
C) Angle strain is the difference between and ideal bond angle for sp hybridized carbon atoms and the actual bond angle in the ring. 
D) Angle strain is the angle between C-C bonds in the cycloalkane ring. 
E) Angle strain is the difference between the C-C bond angles found in a flat ring structure and in an actual ring structure 
A) Angle strain is the angle between carbon bonds on the outer side of a cycloalkane ring. 
B) Angle strain is the difference between an ideal bond angle for sp3 hybridized carbon atoms and the actual bond angle in the ring. 
C) Angle strain is the difference between and ideal bond angle for sp hybridized carbon atoms and the actual bond angle in the ring. 
D) Angle strain is the angle between C-C bonds in the cycloalkane ring. 
E) Angle strain is the difference between the C-C bond angles found in a flat ring structure and in an actual ring structure

Question 13

What is the difference between the R/ S designation and d/l designation of chiral compounds?

Accepted Answer

The R/S system gives the absolute config

Question 14

Which one of the following molecules is the most polar?

Accepted Answer

A) butane 
B) butanoic acid 
C) cyclohexane 
D) ethanol 
A) butane 
B) butanoic acid 
C) cyclohexane 
D) ethanol

Question 15

How many isomers are there for C5H12 ?

Accepted Answer

A) 3 
B) 4 
C) 5 
D) 6 
A) 3 
B) 4 
C) 5 
D) 6

Question 16

Which of the following compounds contain an acyl group?

Accepted Answer

A) esters, ethers, carboxylic acids 
B) esters, carboxylic acids, amines 
C) esters, carboxylic acids, amides 
D) esters, alcohols, amines 
E) ethers, amides, esters 
A) esters, ethers, carboxylic acids 
B) esters, carboxylic acids, amines 
C) esters, carboxylic acids, amides 
D) esters, alcohols, amines 
E) ethers, amides, esters

Question 17

Which of the following compounds is an amine?

Accepted Answer

A) (CH3CH2)2NH 
B) CH3CH2CH2CH2CO2CH3 
C) CH3CH2CH2CH2-O-CH2CH2CH3 
D) CH3CH=O 
E) CH3COCH3 
A) (CH3CH2)2NH 
B) CH3CH2CH2CH2CO2CH3 
C) CH3CH2CH2CH2-O-CH2CH2CH3 
D) CH3CH=O 
E) CH3COCH3

Question 18

Which of the following statements is TRUE?

Accepted Answer

A) Infrared absorption spectroscopy is a common method for identifying functional groups in the structure of organic molecules. 
B) Infrared absorption spectroscopy is a technique that makes use of the fact that infrared photons can excite the valence electrons in organic molecules. 
C) Infrared absorption spectroscopy is a simple yet powerful method for determining the absolute configuration of chiral organic molecules. 
D) Infrared absorption spectroscopy observes the energy emitted by vibrating bonds in molecules. 
E) Infrared absorption spectroscopy is a technique frequently used in separation of isomers. 
A) Infrared absorption spectroscopy is a common method for identifying functional groups in the structure of organic molecules. 
B) Infrared absorption spectroscopy is a technique that makes use of the fact that infrared photons can excite the valence electrons in organic molecules. 
C) Infrared absorption spectroscopy is a simple yet powerful method for determining the absolute configuration of chiral organic molecules. 
D) Infrared absorption spectroscopy observes the energy emitted by vibrating bonds in molecules. 
E) Infrared absorption spectroscopy is a technique frequently used in separation of isomers.

Question 19

What is the maximum number of covalent bonds that a carbon atom can form?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 20

Which of the following acyclic compounds is an alkane?

Accepted Answer

A) C10H22 
B) C11H22 
C) C12H22 
D) C5H10 
E) C5H8 
A) C10H22 
B) C11H22 
C) C12H22 
D) C5H10 
E) C5H8

Exam 20: Organic Chemistry I: Structures

Which of the following sets of compounds contain one ether, one alcohol, and one ketone (not necessarily in this order)?

Which of the following is TRUE regarding stereoisomers?

Which of the following structures is S-2-chlorobutane?

Which of the following compounds is a ketone?

What are constitutional isomers?

Determine the absolute configuration of the molecule shown below:

Which compound is a saturated hydrocarbon?

Which of the following lists the substituents in the order of priority, from highest (priority 1)to lowest (priority 4)?

Which of the following compounds exhibits optical isomerism?

Why are there so many more carbon compounds than the number of compounds made up of all the rest of the elements combined?

Which of the following statements correctly describes organic halides?

What is angle strain in cycloalkanes?

What is the difference between the R/ S designation and d/l designation of chiral compounds?

Which one of the following molecules is the most polar?

How many isomers are there for C5H12 ?

Which of the following compounds contain an acyl group?

Which of the following compounds is an amine?

Which of the following statements is TRUE?

What is the maximum number of covalent bonds that a carbon atom can form?

Which of the following acyclic compounds is an alkane?

Units of Measurement for Physical and Chemical Change

Atoms and Elements

Molecules, Compounds, and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes, Valence Bond Theory, and Molecular Orbital Theory

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry II: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallury

Transition Metals and Coordination Compounds

Filters

How many isomers are there for C₅H₁₂ ?