Question 1

What intermolecular forces are present among molecules in dimethyl ether, CH3OCH3?

Accepted Answer

A)  London forces only 
B)  hydrogen bonding only 
C)  both London dispersion forces and hydrogen bonding 
D)  both London dispersion forces and dipole-dipole forces 
A)  London forces only 
B)  hydrogen bonding only 
C)  both London dispersion forces and hydrogen bonding 
D)  both London dispersion forces and dipole-dipole forces

Question 2

There is one more important resonance form for the structure below. Draw it and then indicate the hybridization of all of the non-H atoms.

Accepted Answer

@#IMG-DLM& All non-H

Question 3

How many carbon-carbon σ bonds are present in the molecule shown?

Accepted Answer

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

Question 4

Shown below is one of the sex pheremones from the butterfly family. How many sp2 hybridized carbon atoms are present in this molecule?

Accepted Answer

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

Question 5

Choose the correct hybridization for the atom indicated in the molecule below.
(CH3)2CHCN
↑

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 6

How many π bonds are present in the molecule shown?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  4 
E)  6 
A)  0 
B)  1 
C)  2 
D)  4 
E)  6

Question 7

What is the approximate CCC bond angle in the compound below?

Accepted Answer

A)  60° 
B)  90° 
C)  109.5° 
D)  120° 
E)  180° 
A)  60° 
B)  90° 
C)  109.5° 
D)  120° 
E)  180°

Question 8

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 9

What is the name of the characteristic functional group found in the molecule

Accepted Answer

The answer of What is the name of the characteristic...

Question 10

Does the C-O bond in methanol (CH3OH) possess an individual bond dipole moment? Briefly explain your answer.

Accepted Answer

Yes, the C-O bond in methanol

Question 11

Explain why the free rotation about the carbon-carbon bond in CH3CH3 is not present in

Accepted Answer

The single carbon-carbon sigma bond pres

Question 12

Draw the structure of any hydrocarbon alkane which contains 5 carbon atoms.

Accepted Answer

CH₃CH₂CH₂CH₂CH

Question 13

Which of the following statements is correct?

Accepted Answer

A)  Higher molecular dipole values (μ) are associated with nonpolar molecules 
B)  All polar molecules are capable of hydrogen bond formation 
C)  The polarity of a molecule is dependent on its three-dimensional structure 
D)  Induced dipole interactions are usually stronger than dipole-dipole interactions 
E)  Polar solutes tend to be more soluble in nonpolar solvents 
A)  Higher molecular dipole values (μ) are associated with nonpolar molecules 
B)  All polar molecules are capable of hydrogen bond formation 
C)  The polarity of a molecule is dependent on its three-dimensional structure 
D)  Induced dipole interactions are usually stronger than dipole-dipole interactions 
E)  Polar solutes tend to be more soluble in nonpolar solvents

Question 14

Draw the structure of any hydrocarbon alkyne which contains 3 carbon atoms.

Accepted Answer

The answer of Draw the structure of any hydrocarbon alkyne...

Question 15

Vildagliptin is a recently released antidiabetic drug (J. Med. Chem. 2010, 7902). How many elements of unsaturation are in Vildagliptin?

Accepted Answer

A)  4 
B)  5 
C)  6 
D)  7 
A)  4 
B)  5 
C)  6 
D)  7

Question 16

Shown below is one of the sex pheremones from the butterfly family. How many sp hybridized carbon atoms are present in this molecule?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  5 
A)  0 
B)  1 
C)  2 
D)  3 
E)  5

Question 17

The structure of uracil is shown below. What is the hybridization of the nitrogens?

Accepted Answer

Both are s

Question 18

Two p orbitals can overlap to form a σ molecular orbital. How many nodes are present in this σ molecular orbital?

Accepted Answer

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

Question 19

The CCO bond angle in acetone (CH3COCH3) is ________.

Accepted Answer

Question 20

How many π bonds are present in the molecule shown?

Accepted Answer

A)  0 
B)  1 
C)  3 
D)  4 
E)  6 
A)  0 
B)  1 
C)  3 
D)  4 
E)  6

Exam 2: Acids and Bases; Functional Groups

What intermolecular forces are present among molecules in dimethyl ether, CH3OCH3?

There is one more important resonance form for the structure below. Draw it and then indicate the hybridization of all of the non-H atoms.

How many carbon-carbon σ bonds are present in the molecule shown?

Shown below is one of the sex pheremones from the butterfly family. How many sp2 hybridized carbon atoms are present in this molecule?

Choose the correct hybridization for the atom indicated in the molecule below. (CH3)2CHCN ↑

How many π bonds are present in the molecule shown?

What is the approximate CCC bond angle in the compound below?

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

What is the name of the characteristic functional group found in the molecule

Does the C-O bond in methanol (CH3OH) possess an individual bond dipole moment? Briefly explain your answer.

Explain why the free rotation about the carbon-carbon bond in CH3CH3 is not present in

Draw the structure of any hydrocarbon alkane which contains 5 carbon atoms.

Which of the following statements is correct?

Draw the structure of any hydrocarbon alkyne which contains 3 carbon atoms.

Vildagliptin is a recently released antidiabetic drug (J. Med. Chem. 2010, 7902). How many elements of unsaturation are in Vildagliptin?

Shown below is one of the sex pheremones from the butterfly family. How many sp hybridized carbon atoms are present in this molecule?

The structure of uracil is shown below. What is the hybridization of the nitrogens?

Two p orbitals can overlap to form a σ molecular orbital. How many nodes are present in this σ molecular orbital?

The CCO bond angle in acetone (CH3COCH3) is ________.

How many π bonds are present in the molecule shown?

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

What intermolecular forces are present among molecules in dimethyl ether, CH₃OCH₃?

Shown below is one of the sex pheremones from the butterfly family. How many sp²hybridized carbon atoms are present in this molecule?

Choose the correct hybridization for the atom indicated in the molecule below. (CH₃)₂CHCN ↑

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

Does the C-O bond in methanol (CH₃OH) possess an individual bond dipole moment? Briefly explain your answer.

Explain why the free rotation about the carbon-carbon bond in CH₃CH₃ is not present in

Shown below is one of the sex pheremones from the butterfly family. How many sphybridized carbon atoms are present in this molecule?

The CCO bond angle in acetone (CH₃COCH₃) is ________.