Question 1

The compound below is soluble in water and in hexane.

Accepted Answer

A) True 
 B)False

Question 2

When the compound shown is treated with H2 and a Pd catalyst, the indicated product is formed.

Accepted Answer

A) True 
 B)False

Question 3

Which compound is a hemiacetal?

Accepted Answer

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

Question 4

When acetaldehyde is reduced by the addition of hydrogen, ethanol is produced.

Accepted Answer

A) True 
 B)False

Question 5

Aldehydes and ketones are polar molecules that are capable of hydrogen bonding with each other.

Accepted Answer

A) True 
 B)False

Question 6

Acetals are ethers.

Accepted Answer

A) True 
 B)False

Question 7

The compound shown below belongs to what class of compounds?

Accepted Answer

A) alkane 
B) aldehyde 
C) ketone 
D) acetal 
E) carboxylic acid 
A) alkane 
B) aldehyde 
C) ketone 
D) acetal 
E) carboxylic acid

Question 8

Which compound will give a positive result in a Tollens test?

Accepted Answer

A)    
B)    
C)    
D)    
E) More than one of the compounds above will give a positive Tollens test result. 
A)    
B)    
C)    
D)    
E) More than one of the compounds above will give a positive Tollens test result.

Question 9

Salicin is a naturally occurring pain reliever isolated from the bark of willow trees. Which statement concerning the functional groups present in salicin is incorrect?

Accepted Answer

A) It contains an acetal. 
B) It contains an alcohol. 
C) It contains a hemiacetal. 
D) It contains a phenol. 
A) It contains an acetal. 
B) It contains an alcohol. 
C) It contains a hemiacetal. 
D) It contains a phenol.

Question 10

The carbohydrate glucose exists predominantly as a cyclic hemiacetal.

Accepted Answer

A) True 
 B)False

Question 11

The Tollens reagent is which of the following?

Accepted Answer

A) K2Cr2O7 
B) H2SO4 
C) Cl2 
D) Ag2O in aqueous NH4OH 
A) K2Cr2O7 
B) H2SO4 
C) Cl2 
D) Ag2O in aqueous NH4OH

Question 12

What product is formed when the compound shown below is treated with Tollens reagent?

Accepted Answer

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

Question 13

Salicin is a naturally occurring pain reliever isolated from the bark of willow trees. Which statement concerning the functional groups present in salicin is incorrect?

Accepted Answer

A) It contains an acetal. 
B) It contains an alcohol. 
C) It contains a hemiacetal. 
D) It contains a phenol. 
A) It contains an acetal. 
B) It contains an alcohol. 
C) It contains a hemiacetal. 
D) It contains a phenol.

Question 14

Higher molecular weight aldehydes and ketones (those having six carbons or more)are soluble in water, but insoluble in organic solvents.

Accepted Answer

A) True 
 B)False

Question 15

Aldehydes and ketones undergo addition reactions with alcohols (ROH)to form hemiacetals and acetals.

Accepted Answer

A) True 
 B)False

Question 16

Oxidation of the aldehyde below gives the indicated product.

Accepted Answer

A) True 
 B)False

Question 17

The compound 2-methyl-2-pentanol is oxidized to produce 2-methyl-2-pentanone.

Accepted Answer

A) True 
 B)False

Question 18

The following ketones play an important role in the tanning industry and are found in many commercial sunscreens. Which ketone is expected to be the most soluble in water and therefore the most readily washed off when an individual goes swimming?

Accepted Answer

A)    
B)    
C)    
D) All would be expected to have the same solubility. 
A)    
B)    
C)    
D) All would be expected to have the same solubility.

Question 19

Which reagent can be used to reduce a ketone?

Accepted Answer

A) K2Cr2O7 
B) H2SO4 
C) H2 with Pd metal 
D) Ag2O in aqueous NH4OH 
A) K2Cr2O7 
B) H2SO4 
C) H2 with Pd metal 
D) Ag2O in aqueous NH4OH

Question 20

What hemiacetal is formed in the reaction below?

Accepted Answer

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

Exam 16: Aldehydes and Ketones

The compound below is soluble in water and in hexane.

When the compound shown is treated with H2 and a Pd catalyst, the indicated product is formed.

Which compound is a hemiacetal?

When acetaldehyde is reduced by the addition of hydrogen, ethanol is produced.

Aldehydes and ketones are polar molecules that are capable of hydrogen bonding with each other.

Acetals are ethers.

The compound shown below belongs to what class of compounds?

Which compound will give a positive result in a Tollens test?

Salicin is a naturally occurring pain reliever isolated from the bark of willow trees. Which statement concerning the functional groups present in salicin is incorrect?

The carbohydrate glucose exists predominantly as a cyclic hemiacetal.

The Tollens reagent is which of the following?

What product is formed when the compound shown below is treated with Tollens reagent?

Salicin is a naturally occurring pain reliever isolated from the bark of willow trees. Which statement concerning the functional groups present in salicin is incorrect?

Higher molecular weight aldehydes and ketones (those having six carbons or more)are soluble in water, but insoluble in organic solvents.

Aldehydes and ketones undergo addition reactions with alcohols (ROH)to form hemiacetals and acetals.

Oxidation of the aldehyde below gives the indicated product.

The compound 2-methyl-2-pentanol is oxidized to produce 2-methyl-2-pentanone.

The following ketones play an important role in the tanning industry and are found in many commercial sunscreens. Which ketone is expected to be the most soluble in water and therefore the most readily washed off when an individual goes swimming?

Which reagent can be used to reduce a ketone?

What hemiacetal is formed in the reaction below?

Matter and Measurement

Atoms and the Periodic Table

Ionic Compounds

Covalent Compounds

Chemical Reactions

Energy Changes, Reaction Rates, and Equilibrium

Gases, Liquids, and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Molecules and Functional Groups

Alkanes

Unsaturated Hydrocarbons

Organic Compounds That Contain Oxygen, Halogen, or Sulfur

The Three-Dimensional Shape of Molecules

Carboxylic Acids, Esters, and Amides

Amines and Neurotransmitters

Lipids

Carbohydrates

Amino Acids, Proteins, and Enzymes

Nucleic Acids and Protein Synthesis

Digestion and the Conversion of Food Into Energy

Carbohydrate, Lipid, and Protein Metabolism

Filters

When the compound shown is treated with H₂ and a Pd catalyst, the indicated product is formed.