Question 1

Which of the class of organic compound below contains a carbonyl group as a part of its structure?

Accepted Answer

A)  aldehyde 
B)  ketone 
C)  carboxylic acid 
D)  ester 
E)  all of the above 
A)  aldehyde 
B)  ketone 
C)  carboxylic acid 
D)  ester 
E)  all of the above

Question 2

In the structure below, the hybridization of the oxygen is ________ and the C-O-C bond angle is ________.

Accepted Answer

A)  sp2; 120° 
B)  sp2; 3; 120° 
D)  sp3; <109.5° 
E)  sp; 120° 
A)  sp2; 120° 
B)  sp2; 3; 120° 
D)  sp3; <109.5° 
E)  sp; 120°

Question 3

Choose the term below which best describes the geometry of acetylene (HCCH).

Accepted Answer

A)  trigonal bipyramidal 
B)  trigonal 
C)  tetrahedral 
D)  square planar 
E)  linear 
A)  trigonal bipyramidal 
B)  trigonal 
C)  tetrahedral 
D)  square planar 
E)  linear

Question 4

What name is given to a hydrocarbon that contains a six-membered ring of alternating single and double bonds?

Accepted Answer

A)  alkane 
B)  alkene 
C)  alkyne 
D)  aromatic 
E)  none of the above 
A)  alkane 
B)  alkene 
C)  alkyne 
D)  aromatic 
E)  none of the above

Question 5

Which functional groups below indicate the presence of two atoms connected by a triple bond?

Accepted Answer

A)  alkyne 
B)  alkene 
C)  nitrile 
D)  ester 
E)  both A and C 
A)  alkyne 
B)  alkene 
C)  nitrile 
D)  ester 
E)  both A and C

Question 6

Acetone is a ketone that contains three carbon atoms. Provide its structure.

Accepted Answer

The answer of Acetone is a ketone that contains three...

Question 7

Which one of the molecules shown below has a net molecular dipole moment?

Accepted Answer

A)  CCl4 
B)  CO2 
C)  CH3CCl3 
D)  BeCl2 
A)  CCl4 
B)  CO2 
C)  CH3CCl3 
D)  BeCl2

Question 8

A molecule of acetylene (C2H2) has a ________ geometry and a molecular dipole moment that is ________.

Accepted Answer

A)  tetrahedral; nonzero 
B)  bent; nonzero 
C)  bent; zero 
D)  linear; nonzero 
E)  linear; zero 
A)  tetrahedral; nonzero 
B)  bent; nonzero 
C)  bent; zero 
D)  linear; nonzero 
E)  linear; zero

Question 9

What hybrid atomic orbitals are overlapping to form the carbon-oxygen σ bond in acetaldehyde (CH3CHO)?

Accepted Answer

carbon sp²

Question 10

Draw the hydrogen bonding that takes place between H-F and dimethyl ether CH3OCH3.

Accepted Answer

Question 11

Which of the following functional groups does not have at least one sp2 hybridized carbon atom as a constituent of the group?

Accepted Answer

A)  carboxylic acid 
B)  alkene 
C)  aldehyde 
D)  ether 
E)  ester 
A)  carboxylic acid 
B)  alkene 
C)  aldehyde 
D)  ether 
E)  ester

Question 12

If a compound, C5H7NO, contains 1 ring, how many pi bonds are there in this compound?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
A)  0 
B)  1 
C)  2 
D)  3

Question 13

What kind of molecular orbital (σ, σ*, π, or π*) results when the two atomic orbitals shown below interact in the manner indicated?

Accepted Answer

Question 14

Which of the following best describes the relationship between the two structures shown?

Accepted Answer

A)  They represent the same compound. 
B)  They represent different compounds that are constitutional isomers. 
C)  They represent different compounds that are geometric isomers. 
D)  They represent different compounds that are alkenes. 
E)  They represent different compounds that are alkanes. 
A)  They represent the same compound. 
B)  They represent different compounds that are constitutional isomers. 
C)  They represent different compounds that are geometric isomers. 
D)  They represent different compounds that are alkenes. 
E)  They represent different compounds that are alkanes.

Question 15

Are the two compounds shown below best described as cis-trans isomers, constitutional isomers, or not isomeric?

Accepted Answer

The answer of Are the two compounds shown below best...

Question 16

Based on the structure below, what is the value for the H-N-CH3 bond angle?

Accepted Answer

A)  60 degrees 
B)  90 degrees 
C)  109 degrees 
D)  120 degrees 
A)  60 degrees 
B)  90 degrees 
C)  109 degrees 
D)  120 degrees

Question 17

Which of the following compounds is not a constitutional isomer of a compound with an empirical formula C3H7O and a formula mass of 118.164?

Accepted Answer

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

Question 18

Choose the correct hybridization for the atom indicated in the molecule below.
CH3CH2CH2CH3
↑

Accepted Answer

A)  sp 
B)  sp2 
C)  sp3 
D)  none of the above 
A)  sp 
B)  sp2 
C)  sp3 
D)  none of the above

Question 19

The compounds below are base pairs used to form supramolecular polymers (Org. Lett. 2011, 240). They are held together by three intermolecular hydrogen bonds and each contains one intramolecular hydrogen bond. Which atom in structure B forms a hydrogen bond with the circled hydrogen in structure A?

Accepted Answer

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

Question 20

The molecule shown below contains ________ pi bonds and ________ sigma bonds.

Accepted Answer

The answer of The molecule shown below contains ________ pi...

Exam 2: Acids and Bases; Functional Groups

Which of the class of organic compound below contains a carbonyl group as a part of its structure?

In the structure below, the hybridization of the oxygen is ________ and the C-O-C bond angle is ________.

Choose the term below which best describes the geometry of acetylene (HCCH).

What name is given to a hydrocarbon that contains a six-membered ring of alternating single and double bonds?

Which functional groups below indicate the presence of two atoms connected by a triple bond?

Acetone is a ketone that contains three carbon atoms. Provide its structure.

Which one of the molecules shown below has a net molecular dipole moment?

A molecule of acetylene (C2H2) has a ________ geometry and a molecular dipole moment that is ________.

What hybrid atomic orbitals are overlapping to form the carbon-oxygen σ bond in acetaldehyde (CH3CHO)?

Draw the hydrogen bonding that takes place between H-F and dimethyl ether CH3OCH3.

Which of the following functional groups does not have at least one sp2 hybridized carbon atom as a constituent of the group?

If a compound, C5H7NO, contains 1 ring, how many pi bonds are there in this compound?

What kind of molecular orbital (σ, σ*, π, or π*) results when the two atomic orbitals shown below interact in the manner indicated?

Which of the following best describes the relationship between the two structures shown?

Are the two compounds shown below best described as cis-trans isomers, constitutional isomers, or not isomeric?

Based on the structure below, what is the value for the H-N-CH3 bond angle?

Which of the following compounds is not a constitutional isomer of a compound with an empirical formula C3H7O and a formula mass of 118.164?

Choose the correct hybridization for the atom indicated in the molecule below. CH3CH2CH2CH3 ↑

The compounds below are base pairs used to form supramolecular polymers (Org. Lett. 2011, 240). They are held together by three intermolecular hydrogen bonds and each contains one intramolecular hydrogen bond. Which atom in structure B forms a hydrogen bond with the circled hydrogen in structure A?

The molecule shown below contains ________ pi bonds and ________ sigma bonds.

Structure and Bonding

Structure and Stereochemistry of Alkanes

The Study of Chemical Reactions

Stereochemistry

Alkyl Halides; Nucleophilic Substitution

Structure and Synthesis of Alkenes; Elimination

Reactions of Alkenes

Structure and Synthesis of Alcohols

Reactions of Alcohols

Infrared Spectroscopy and Mass Spectrometry

Nuclear Magnetic Resonance Spectroscopy

Ethers, Epoxides, and Thioethers

Conjugated Systems, Orbital Symmetry, and Ultraviolet Spectroscopy

Aromatic Compounds

Reactions of Aromatic Compounds

Ketones and Aldehydes

Amines

Carboxylic Acids

Carboxylic Acid Derivatives

Condensations and Alpha Substitutions of Carboxyl Compounds

Carbohydrates and Nucleic Acids

Amino Acids, Peptides, and Proteins

Lipids

Synthetic Polymers

Filters

In the structure below, the hybridization of the oxygen is and the C-O-C bond angle is .

A molecule of acetylene (C₂H₂) has a geometry and a molecular dipole moment that is .

What hybrid atomic orbitals are overlapping to form the carbon-oxygen σ bond in acetaldehyde (CH₃CHO)?

Draw the hydrogen bonding that takes place between H-F and dimethyl ether CH₃OCH₃.

Which of the following functional groups does not have at least one sp² hybridized carbon atom as a constituent of the group?

If a compound, C₅H₇NO, contains 1 ring, how many pi bonds are there in this compound?

What kind of molecular orbital (σ, σ^, π, or π^) results when the two atomic orbitals shown below interact in the manner indicated?

Based on the structure below, what is the value for the H-N-CH₃ bond angle?

Which of the following compounds is not a constitutional isomer of a compound with an empirical formula C₃H₇O and a formula mass of 118.164?

Choose the correct hybridization for the atom indicated in the molecule below. CH₃CH₂CH₂CH₃ ↑

The molecule shown below contains pi bonds and sigma bonds.