Question 1

Which of the following is a hemiacetal?

Accepted Answer

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

Question 2

A compound with an -OH group and an ether-like -OR group bonded to the same carbon atom is

Accepted Answer

A) an acetal. 
B) an aldol. 
C) a diol. 
D) a hemiacetal. 
E) a simple ether. 
A) an acetal. 
B) an aldol. 
C) a diol. 
D) a hemiacetal. 
E) a simple ether. D

Question 3

Which molecule is an aldehyde?

Accepted Answer

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

Question 4

Which compound has the lowest boiling point?

Accepted Answer

A) CH3CHO 
B) CH3CH2CHO 
C) CH3CH2OH 
D) CH3CH2CH2OH 
E) CH3COCH3 
A) CH3CHO 
B) CH3CH2CHO 
C) CH3CH2OH 
D) CH3CH2CH2OH 
E) CH3COCH3

Question 5

Match the following.
-an example of an acetal

Accepted Answer

A)   
B) CH3CH2COCH2CH3 
C) CH3CH2CH2 H2CHO 
D) the simplest aldehyde,also named formaldehyde 
E) the simplest ketone,also named acetone
F)a functional group consisting of a carbon atom with a double bond to an oxygen atom
G)a functional group consisting of a carbonyl group bonded to to a carbon that is bonded
to one hydrogen atom and two other carbon atoms.
H)a compound with a carbon atom that is bonded to both an alcohol-like group and an ether-like group.
I)a functional group consisting of a carbonyl group bonded to two other carbon atoms
J)a compound with a carbon atom that is bonded to two ether-like groups.
K) 
L)  
A)   
B) CH3CH2COCH2CH3 
C) CH3CH2CH2 H2CHO 
D) the simplest aldehyde,also named formaldehyde 
E) the simplest ketone,also named acetone
F)a functional group consisting of a carbon atom with a double bond to an oxygen atom
G)a functional group consisting of a carbonyl group bonded to to a carbon that is bonded
to one hydrogen atom and two other carbon atoms.
H)a compound with a carbon atom that is bonded to both an alcohol-like group and an ether-like group.
I)a functional group consisting of a carbonyl group bonded to two other carbon atoms
J)a compound with a carbon atom that is bonded to two ether-like groups.
K) 
L)

Question 6

All of the following are true concerning a three-carbon ketone except

Accepted Answer

A) its condensed formula is CH3COCH3. 
B) its systematic name is propanone. 
C) its common name is acetone. 
D) another acceptable name is methyl ethyl ketone. 
E) its structural formula is
 
. 
A) its condensed formula is CH3COCH3. 
B) its systematic name is propanone. 
C) its common name is acetone. 
D) another acceptable name is methyl ethyl ketone. 
E) its structural formula is
 
.

Question 7

All of the following are true concerning a two-carbon aldehyde except

Accepted Answer

A) its condensed formula is C
 
CHO. 
B) its systematic name is ethanal. 
C) its common name is acetaldehyde. 
D) it has a higher boiling point than an alcohol of similar molecular weight. 
E) its structural formula is:
 
. 
A) its condensed formula is C
 
CHO. 
B) its systematic name is ethanal. 
C) its common name is acetaldehyde. 
D) it has a higher boiling point than an alcohol of similar molecular weight. 
E) its structural formula is:
 
.

Question 8

Which molecule is acetone?

Accepted Answer

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

Question 9

Oxidation of an aldehyde produces a

Accepted Answer

A) carboxylic acid. 
B) primary alcohol. 
C) secondary alcohol. 
D) tertiary alcohol. 
E) ketone. 
A) carboxylic acid. 
B) primary alcohol. 
C) secondary alcohol. 
D) tertiary alcohol. 
E) ketone.

Question 10

Match the following.
-ketone

Accepted Answer

A)   
B) CH3CH2COCH2CH3 
C) CH3CH2CH2 H2CHO 
D) the simplest aldehyde,also named formaldehyde 
E) the simplest ketone,also named acetone
F)a functional group consisting of a carbon atom with a double bond to an oxygen atom
G)a functional group consisting of a carbonyl group bonded to to a carbon that is bonded
to one hydrogen atom and two other carbon atoms.
H)a compound with a carbon atom that is bonded to both an alcohol-like group and an ether-like group.
I)a functional group consisting of a carbonyl group bonded to two other carbon atoms
J)a compound with a carbon atom that is bonded to two ether-like groups.
K) 
L)  
A)   
B) CH3CH2COCH2CH3 
C) CH3CH2CH2 H2CHO 
D) the simplest aldehyde,also named formaldehyde 
E) the simplest ketone,also named acetone
F)a functional group consisting of a carbon atom with a double bond to an oxygen atom
G)a functional group consisting of a carbonyl group bonded to to a carbon that is bonded
to one hydrogen atom and two other carbon atoms.
H)a compound with a carbon atom that is bonded to both an alcohol-like group and an ether-like group.
I)a functional group consisting of a carbonyl group bonded to two other carbon atoms
J)a compound with a carbon atom that is bonded to two ether-like groups.
K) 
L)

Question 11

Which observation denotes a positive Tollens' test?

Accepted Answer

A) The light blue color of the reagent disappears. 
B) A brick-red precipitate forms. 
C) A silver deposit forms on the glass surface. 
D) A silver wire dissolves. 
E) Bubbles of oxygen gas are produced. 
A) The light blue color of the reagent disappears. 
B) A brick-red precipitate forms. 
C) A silver deposit forms on the glass surface. 
D) A silver wire dissolves. 
E) Bubbles of oxygen gas are produced.

Question 12

All of the following are properties of acetone except

Accepted Answer

A) volatility. 
B) flammability. 
C) intoxication. 
D) solvent for organic substances. 
E) nutrient. 
A) volatility. 
B) flammability. 
C) intoxication. 
D) solvent for organic substances. 
E) nutrient.

Question 13

Which of the following products is formed when hydrogen is reacted with 3-methyl-2-butanone?

Accepted Answer

A) a primary alcohol 
B) a secondary alcohol 
C) a tertiary alcohol 
D) an acetal 
A) a primary alcohol 
B) a secondary alcohol 
C) a tertiary alcohol 
D) an acetal

Question 14

What is the IUPAC name of the compound shown?

Accepted Answer

A) 2-methyl-4-butanone 
B) 2-methyl-1-butanone 
C) 2-methylbutanal 
D) 3-methylbutanal 
E) isopentanal 
A) 2-methyl-4-butanone 
B) 2-methyl-1-butanone 
C) 2-methylbutanal 
D) 3-methylbutanal 
E) isopentanal

Question 15

All of the statements concerning the carbonyl group in aldehydes and ketones are true except

Accepted Answer

A) the bond is polar,with a slight negative charge on the oxygen atom. 
B) the bond angles about the central carbon atom are 120°. 
C) the carbonyl group is planar. 
D) in condensed form the carbonyl group can be written as -CHO. 
E) because the bond is polar,carbonyl groups readily form hydrogen bonds with each other. 
A) the bond is polar,with a slight negative charge on the oxygen atom. 
B) the bond angles about the central carbon atom are 120°. 
C) the carbonyl group is planar. 
D) in condensed form the carbonyl group can be written as -CHO. 
E) because the bond is polar,carbonyl groups readily form hydrogen bonds with each other.

Question 16

All of the following statements about oxidation of carbonyls are true except

Accepted Answer

A) the Tollens' test involves oxidation of Ag+. 
B) the Benedict's test involves reduction of Cu2+. 
C) oxidation of aldehydes produces carboxylic acids. 
D) ketones do not react with mild oxidizing agents. 
E) All of the statements are true. 
A) the Tollens' test involves oxidation of Ag+. 
B) the Benedict's test involves reduction of Cu2+. 
C) oxidation of aldehydes produces carboxylic acids. 
D) ketones do not react with mild oxidizing agents. 
E) All of the statements are true.

Question 17

One of the major differences between aldehydes and ketones as compared to other carbonyl compounds is that in aldehydes and ketones

Accepted Answer

A) the molar masses tend to be much smaller than in the other types of compounds. 
B) the carbonyl carbon has bond angles of 120°C,unlike the comparable bond angles in other carbonyl compounds. 
C) the polar carbon-oxygen bond is less reactive than the hydrocarbon portion of the molecule. 
D) the carbonyl group carbon atom is bonded to atoms that do not attract electrons strongly. 
E) none of the above 
A) the molar masses tend to be much smaller than in the other types of compounds. 
B) the carbonyl carbon has bond angles of 120°C,unlike the comparable bond angles in other carbonyl compounds. 
C) the polar carbon-oxygen bond is less reactive than the hydrocarbon portion of the molecule. 
D) the carbonyl group carbon atom is bonded to atoms that do not attract electrons strongly. 
E) none of the above

Question 18

The carbonyl group is

Accepted Answer

A) a general term for any functional group involving a carbon-oxygen bond. 
B) found only in aldehydes and ketones. 
C) a functional group in which carbon and oxygen are joined by a double bond. 
D) a functional group with a 6-membered ring where at least one atom is oxygen. 
E) produced by reduction reactions of primary or secondary alcohols. 
A) a general term for any functional group involving a carbon-oxygen bond. 
B) found only in aldehydes and ketones. 
C) a functional group in which carbon and oxygen are joined by a double bond. 
D) a functional group with a 6-membered ring where at least one atom is oxygen. 
E) produced by reduction reactions of primary or secondary alcohols.

Question 19

The IUPAC name for acetone is

Accepted Answer

A) 2-propanal. 
B) 3-propanal. 
C) 2-propanone. 
D) 1-propanone. 
E) dimethyl ketone. 
A) 2-propanal. 
B) 3-propanal. 
C) 2-propanone. 
D) 1-propanone. 
E) dimethyl ketone.

Question 20

What is the IUPAC name for diisopropyl ketone?

Accepted Answer

A) 2,2-dimethyl-3-pentanone 
B) 2-dimethyl-3-pentanone 
C) 2,4-dimethyl-3-pentanone 
D) 2,4-dimethyl-3-propanone 
A) 2,2-dimethyl-3-pentanone 
B) 2-dimethyl-3-pentanone 
C) 2,4-dimethyl-3-pentanone 
D) 2,4-dimethyl-3-propanone

Exam 16: Aldehydes and Ketones

Which of the following is a hemiacetal?

A compound with an -OH group and an ether-like -OR group bonded to the same carbon atom is

Which molecule is an aldehyde?

Which compound has the lowest boiling point?

Match the following. -an example of an acetal

All of the following are true concerning a three-carbon ketone except

All of the following are true concerning a two-carbon aldehyde except

Which molecule is acetone?

Oxidation of an aldehyde produces a

Match the following. -ketone

Which observation denotes a positive Tollens' test?

All of the following are properties of acetone except

Which of the following products is formed when hydrogen is reacted with 3-methyl-2-butanone?

What is the IUPAC name of the compound shown?

All of the statements concerning the carbonyl group in aldehydes and ketones are true except

All of the following statements about oxidation of carbonyls are true except

One of the major differences between aldehydes and ketones as compared to other carbonyl compounds is that in aldehydes and ketones

The carbonyl group is

The IUPAC name for acetone is

What is the IUPAC name for diisopropyl ketone?

Matter and Measurements

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Introduction to Organic Chemistry: Alkanes

Alkenes, alkynes, and Aromatic Compounds

Some Compounds With Oxygen, sulfur, or a Halogen

Amines

Carboxylic Acids and Their Derivatives

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The Generation of Biochemical Energy

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