Question 1

Which of the following is an example of a polyamide?

Accepted Answer

A)  Lexan 
B)  nylon-66 
C)  polystyrene 
D)  polyethylene terephthalate 
A)  Lexan 
B)  nylon-66 
C)  polystyrene 
D)  polyethylene terephthalate

Question 2

Which of the following statements is true regarding carboxylic anhydrides and phosphoric anhydrides?

Accepted Answer

A)  Both carboxylic anhydrides and phosphoric anhydrides have important biological functions. 
B)  Neither carboxylic anhydrides nor phosphoric anhydrides have important biological functions. 
C)  Carboxylic anhydrides are not important in biochemistry, but phosphoric anhydrides are important in biochemistry. 
D)  Phosphoric anhydrides are not important in biochemistry, but carboxylic anhydrides are important in biochemistry. 
A)  Both carboxylic anhydrides and phosphoric anhydrides have important biological functions. 
B)  Neither carboxylic anhydrides nor phosphoric anhydrides have important biological functions. 
C)  Carboxylic anhydrides are not important in biochemistry, but phosphoric anhydrides are important in biochemistry. 
D)  Phosphoric anhydrides are not important in biochemistry, but carboxylic anhydrides are important in biochemistry.

Question 3

Which of the following polymers is a polyamide?

Accepted Answer

A)  Lexan 
B)  Dacron 
C)  nylon-66 
D)  Mylar 
A)  Lexan 
B)  Dacron 
C)  nylon-66 
D)  Mylar

Question 4

Which of the following compounds is formed when an amide reacts with an amine?

Accepted Answer

A)  a carboxylic acid 
B)  an ester 
C)  an imide 
D)  None, amides do not react with amines. 
A)  a carboxylic acid 
B)  an ester 
C)  an imide 
D)  None, amides do not react with amines.

Question 5

Which of the following compounds is formed by the reaction of formic anhydride with ammonia?

Accepted Answer

A)  formamide 
B)  N-methylformamide 
C)  N,N-dimethylformamide 
D)  acetamide 
A)  formamide 
B)  N-methylformamide 
C)  N,N-dimethylformamide 
D)  acetamide

Question 6

A chemist treats salicylic acid with acetic anhydride to produce a drug. Identify the drug formed by the reaction.

Accepted Answer

A)  naproxen 
B)  penicillin G 
C)  salicin 
D)  aspirin 
A)  naproxen 
B)  penicillin G 
C)  salicin 
D)  aspirin

Question 7

Which of the products is always formed during the hydrolysis of esters, regardless of whether the hydrolysis is carried out in an acidic or a basic solution?

Accepted Answer

A)  an alcohol 
B)  carboxylic acid 
C)  a salt 
D)  none of these 
A)  an alcohol 
B)  carboxylic acid 
C)  a salt 
D)  none of these

Question 8

Which of the following statements is true of the monomeric units that react to form Kevlar?

Accepted Answer

A)  They are both 1,4-disubstituted benzene derivatives. 
B)  They are both 1,3-disubstituted benzene derivatives. 
C)  They are both 1,2-disubstituted benzene derivatives. 
D)  None of these statements are correct. 
A)  They are both 1,4-disubstituted benzene derivatives. 
B)  They are both 1,3-disubstituted benzene derivatives. 
C)  They are both 1,2-disubstituted benzene derivatives. 
D)  None of these statements are correct.

Question 9

Which of the following by-products is obtained when an amine and an anhydride react to form an amide?

Accepted Answer

A)  an alcohol 
B)  a carboxylic acid 
C)  water 
D)  an ester 
A)  an alcohol 
B)  a carboxylic acid 
C)  water 
D)  an ester

Question 10

Which of the following is not a form of poly(ethylene terephthalate)?

Accepted Answer

A)  Dacron 
B)  Mylar 
C)  nylon-66 
D)  None of these 
A)  Dacron 
B)  Mylar 
C)  nylon-66 
D)  None of these

Question 11

Which of the following statements is true of amide hydrolysis?

Accepted Answer

A)  Amides do not undergo hydrolysis. 
B)  Amides are more difficult to hydrolyze than esters. 
C)  Amides and esters are hydrolyzed under similar conditions. 
D)  Amides are more easily hydrolyzed than esters. 
A)  Amides do not undergo hydrolysis. 
B)  Amides are more difficult to hydrolyze than esters. 
C)  Amides and esters are hydrolyzed under similar conditions. 
D)  Amides are more easily hydrolyzed than esters.

Question 12

Consider the following structure.   The given compound is the major product of this reaction. Identify the by-product formed when terephthalic acid is treated with 1,4-benzenediamine.

Accepted Answer

A)  ammonia 
B)  water 
C)  an alcohol 
D)  a salt 
A)  ammonia 
B)  water 
C)  an alcohol 
D)  a salt

Question 13

Which of the following vitamins contains pyridoxal phosphate in its metabolically active state?

Accepted Answer

A)  vitamin B6 
B)  vitamin B12 
C)  vitamin D 
D)  vitamin E 
A)  vitamin B6 
B)  vitamin B12 
C)  vitamin D 
D)  vitamin E

Question 14

Identify the products obtained by the hydrolysis of the given compound.

Accepted Answer

A)  one molecule of dibenzoic acid and one molecule of benzene 
B)  two molecules of benzoic acid 
C)  one molecule of benzene and one molecule of a carboxylic acid 
D)  two molecules of phenol 
A)  one molecule of dibenzoic acid and one molecule of benzene 
B)  two molecules of benzoic acid 
C)  one molecule of benzene and one molecule of a carboxylic acid 
D)  two molecules of phenol

Question 15

Which of the following compounds is a symmetric anhydride?

Accepted Answer

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

Question 16

Which of the following statements is correct about the core ring structure of barbituric acid?

Accepted Answer

A)  It is an aromatic ring that has three carbons and three nitrogens. 
B)  It is an aromatic ring that has four carbons and two nitrogens. 
C)  It is an aliphatic ring that has three carbons and three nitrogens. 
D)  It is an aliphatic ring that has four carbons and two nitrogens. 
A)  It is an aromatic ring that has three carbons and three nitrogens. 
B)  It is an aromatic ring that has four carbons and two nitrogens. 
C)  It is an aliphatic ring that has three carbons and three nitrogens. 
D)  It is an aliphatic ring that has four carbons and two nitrogens.

Question 17

What is the minimum number of oxygen atoms present in an ester?

Accepted Answer

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

Question 18

Which of the following pairs of reactants is best suited for the synthesis of aspirin?

Accepted Answer

A)  salicin and acetic acid 
B)  salicylic acid and acetic acid 
C)  salicin and acetic anhydride 
D)  salicylic acid and acetic anhydride 
A)  salicin and acetic acid 
B)  salicylic acid and acetic acid 
C)  salicin and acetic anhydride 
D)  salicylic acid and acetic anhydride

Question 19

Which of the following statements is true of lactic acid and glycolic acid?

Accepted Answer

A)  Both glycolic acid and lactic acid are α-hydroxy carboxylic acids. 
B)  Neither glycolic acid nor lactic acid is an α-hydroxy carboxylic acid. 
C)  Glycolic acid is an α-hydroxy carboxylic acid and lactic acid is a β-hydroxy carboxylic acid. 
D)  Lactic acid is an α-hydroxy carboxylic acid and glycolic acid is a β-hydroxy carboxylic acid. 
A)  Both glycolic acid and lactic acid are α-hydroxy carboxylic acids. 
B)  Neither glycolic acid nor lactic acid is an α-hydroxy carboxylic acid. 
C)  Glycolic acid is an α-hydroxy carboxylic acid and lactic acid is a β-hydroxy carboxylic acid. 
D)  Lactic acid is an α-hydroxy carboxylic acid and glycolic acid is a β-hydroxy carboxylic acid.

Question 20

Consider the following structure.   Which of the following is the correct classification of the given compound?

Accepted Answer

A)  polycarbonate 
B)  polyester 
C)  polyamide 
D)  none of these 
A)  polycarbonate 
B)  polyester 
C)  polyamide 
D)  none of these

Exam 18: Carboxylic Anhydrides, Esters, and Amides

Which of the following is an example of a polyamide?

Which of the following statements is true regarding carboxylic anhydrides and phosphoric anhydrides?

Which of the following polymers is a polyamide?

Which of the following compounds is formed when an amide reacts with an amine?

Which of the following compounds is formed by the reaction of formic anhydride with ammonia?

A chemist treats salicylic acid with acetic anhydride to produce a drug. Identify the drug formed by the reaction.

Which of the products is always formed during the hydrolysis of esters, regardless of whether the hydrolysis is carried out in an acidic or a basic solution?

Which of the following statements is true of the monomeric units that react to form Kevlar?

Which of the following by-products is obtained when an amine and an anhydride react to form an amide?

Which of the following is not a form of poly(ethylene terephthalate)?

Which of the following statements is true of amide hydrolysis?

Consider the following structure. The given compound is the major product of this reaction. Identify the by-product formed when terephthalic acid is treated with 1,4-benzenediamine.

Which of the following vitamins contains pyridoxal phosphate in its metabolically active state?

Identify the products obtained by the hydrolysis of the given compound.

Which of the following compounds is a symmetric anhydride?

Which of the following statements is correct about the core ring structure of barbituric acid?

What is the minimum number of oxygen atoms present in an ester?

Which of the following pairs of reactants is best suited for the synthesis of aspirin?

Which of the following statements is true of lactic acid and glycolic acid?

Consider the following structure. Which of the following is the correct classification of the given compound?

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