Question 1

Benedict's test requires an aldehyde and an adjacent

Accepted Answer

A)  saturated carbon. 
B)  ketone. 
C)  alcohol. 
D)  phenyl ring. 
E)  acid. 
A)  saturated carbon. 
B)  ketone. 
C)  alcohol. 
D)  phenyl ring. 
E)  acid.

Question 2

A chiral carbon atom can have fewer than four different groups bonded to it.

Accepted Answer

A) True 
 B)False

Question 3

All aldehydes have a carbonyl carbon bonded to at least two hydrogens.

Accepted Answer

A) True 
 B)False

Question 4

Enantiomers may have very different tastes or smells.

Accepted Answer

A) True 
 B)False

Question 5

How many lone pairs of electrons does the oxygen in a carbonyl group have?

Accepted Answer

A)  None, they're all bonded. 
B)  one 
C)  two 
D)  three 
E)  four 
A)  None, they're all bonded. 
B)  one 
C)  two 
D)  three 
E)  four

Question 6

Acetone is a three-carbon aldehyde.

Accepted Answer

A) True 
 B)False

Question 7

Carbonyl compounds having fewer than four carbon atoms are very water soluble.

Accepted Answer

A) True 
 B)False

Question 8

The carbonyl group consists of a carbon-oxygen single bond, and a second bond to hydrogen.

Accepted Answer

A) True 
 B)False

Question 9

Acetone can be produced by the body when a person is

Accepted Answer

A)  exercising. 
B)  dieting with high protein diets. 
C)  ill with a flu. 
D)  recovering from surgery. 
E)  sleeping. 
A)  exercising. 
B)  dieting with high protein diets. 
C)  ill with a flu. 
D)  recovering from surgery. 
E)  sleeping.

Question 10

In the IUPAC naming system, an aldehyde is named by replacing the -e of the name of the corresponding alkane with

Accepted Answer

A)  yne. 
B)  ene. 
C)  al. 
D)  one. 
E)  ol. 
A)  yne. 
B)  ene. 
C)  al. 
D)  one. 
E)  ol.

Question 11

What is the name of this compound?

Accepted Answer

A)  2-methylbutanone 
B)  3-methyl-2-butanone 
C)  2-methyl-3-butanone 
D)  3-methylbutanone 
E)  pentanone 
A)  2-methylbutanone 
B)  3-methyl-2-butanone 
C)  2-methyl-3-butanone 
D)  3-methylbutanone 
E)  pentanone

Question 12

How many moles of an alcohol are needed to react with 1 mole of an aldehyde to form a hemiacetal?

Accepted Answer

A)  1 
B)  1.5 
C)  2 
D)  3 
E)  3.5 
A)  1 
B)  1.5 
C)  2 
D)  3 
E)  3.5

Question 13

The carbonyl group gives aldehydes higher boiling points than alkanes of similar mass.

Accepted Answer

A) True 
 B)False

Question 14

The carbonyl group consists of

Accepted Answer

A)  a carbon-oxygen-hydrogen structure. 
B)  a carbon-oxygen single bond. 
C)  a carbon-oxygen double bond. 
D)  a carbon-oxygen triple bond. 
E)  a carbon-oxygen-carbon structure. 
A)  a carbon-oxygen-hydrogen structure. 
B)  a carbon-oxygen single bond. 
C)  a carbon-oxygen double bond. 
D)  a carbon-oxygen triple bond. 
E)  a carbon-oxygen-carbon structure.

Question 15

Which one of the following compounds is an aldehyde?

Accepted Answer

A)    
B)    
C)  CH3 - CH= CH - CH₂ - CH3 
D)  CH3 - CH₂ - O - CH₂ - CH3 
E)  CH3 - SH 
A)    
B)    
C)  CH3 - CH= CH - CH₂ - CH3 
D)  CH3 - CH₂ - O - CH₂ - CH3 
E)  CH3 - SH

Question 16

An acetal is formed from two molecules of an alcohol and a(n)

Accepted Answer

A)  aldehyde. 
B)  ether. 
C)  carboxylic acid. 
D)  alkyl ether. 
E)  ester. 
A)  aldehyde. 
B)  ether. 
C)  carboxylic acid. 
D)  alkyl ether. 
E)  ester.

Question 17

Which of the following would not be water soluble?

Accepted Answer

A)  acetone 
B)  propanal 
C)  3-heptanone 
D)  formaldehyde 
E)  2-butanone 
A)  acetone 
B)  propanal 
C)  3-heptanone 
D)  formaldehyde 
E)  2-butanone

Question 18

The carbonyl group does not have a dipole.

Accepted Answer

A) True 
 B)False

Question 19

What are the bond angles in a typical carbonyl group?

Accepted Answer

A)  45° 
B)  90° 
C)  109.5° 
D)  120° 
E)  135° 
A)  45° 
B)  90° 
C)  109.5° 
D)  120° 
E)  135°

Question 20

2-butanol is a chiral molecule.

Accepted Answer

A) True 
 B)False

Exam 14: Aldehydes, Ketones, and Chiral Molecules

Benedict's test requires an aldehyde and an adjacent

A chiral carbon atom can have fewer than four different groups bonded to it.

All aldehydes have a carbonyl carbon bonded to at least two hydrogens.

Enantiomers may have very different tastes or smells.

How many lone pairs of electrons does the oxygen in a carbonyl group have?

Acetone is a three-carbon aldehyde.

Carbonyl compounds having fewer than four carbon atoms are very water soluble.

The carbonyl group consists of a carbon-oxygen single bond, and a second bond to hydrogen.

Acetone can be produced by the body when a person is

In the IUPAC naming system, an aldehyde is named by replacing the -e of the name of the corresponding alkane with

What is the name of this compound?

How many moles of an alcohol are needed to react with 1 mole of an aldehyde to form a hemiacetal?

The carbonyl group gives aldehydes higher boiling points than alkanes of similar mass.

The carbonyl group consists of

Which one of the following compounds is an aldehyde?

An acetal is formed from two molecules of an alcohol and a(n)

Which of the following would not be water soluble?

The carbonyl group does not have a dipole.

What are the bond angles in a typical carbonyl group?

2-butanol is a chiral molecule.

Chemistry and Measurements

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