Question 1

Which of the following is the formula of the pyrophosphate ion?

Accepted Answer

A)  PO43− 
B)  HPO42− 
C)  P2O72− 
D)  P2O74− 
A)  PO43− 
B)  HPO42− 
C)  P2O72− 
D)  P2O74−

Question 2

Phosphoric acid, H3PO4, cannot form which types of phosphoric esters?

Accepted Answer

A)  monoesters 
B)  diesters 
C)  triesters 
D)  tetraesters 
A)  monoesters 
B)  diesters 
C)  triesters 
D)  tetraesters

Question 3

Which of the following pairs of reagents reacts to give an ester which is an isomer of ethyl acetate?

Accepted Answer

A)  formic acid + 1-butanol 
B)  propanoic acid + methanol 
C)  both a and b 
D)  neither a nor b 
A)  formic acid + 1-butanol 
B)  propanoic acid + methanol 
C)  both a and b 
D)  neither a nor b

Question 4

Which of the following is a biologically important phosphoric ester?

Accepted Answer

A)  pyrophosphate 
B)  pyridoxal phosphate 
C)  dihydroxyacetone 
D)  triphosphate ion 
A)  pyrophosphate 
B)  pyridoxal phosphate 
C)  dihydroxyacetone 
D)  triphosphate ion

Question 5

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 6

Which of the following pairs of reagents reacts to give an ester which is an isomer of propyl acetate?

Accepted Answer

A)  formic acid + 1-butanol 
B)  propanoic acid + methanol 
C)  butanoic acid + ethanol 
D)  none of these 
A)  formic acid + 1-butanol 
B)  propanoic acid + methanol 
C)  butanoic acid + ethanol 
D)  none of these

Question 7

Which statement describes step-growth polymerization?

Accepted Answer

A)  the opening of a double bond 
B)  the reaction of a difunctional molecule with a monofunctional molecule 
C)  the reaction of two difunctional molecules with each other 
D)  None of these is step-growth polymerization. 
A)  the opening of a double bond 
B)  the reaction of a difunctional molecule with a monofunctional molecule 
C)  the reaction of two difunctional molecules with each other 
D)  None of these is step-growth polymerization.

Question 8

Which of the following is true of the monomeric units which 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 the above is true. 
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 the above is true.

Question 9

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

Accepted Answer

A)  formamide 
B)  N-methylformamide 
C)  N,N-dimethylformamide 
D)  a mixture of two or more of these compounds 
A)  formamide 
B)  N-methylformamide 
C)  N,N-dimethylformamide 
D)  a mixture of two or more of these compounds

Question 10

Esters do not react with which class of amines to form amides?

Accepted Answer

A)  1° 
B)  2° 
C)  3° 
D)  None, esters react with all of these to form amides. 
A)  1° 
B)  2° 
C)  3° 
D)  None, esters react with all of these to form amides.

Question 11

Which of the following describes the types of compounds produced when an anhydride reacts with an alcohol?

Accepted Answer

A)  only a carboxylic acid 
B)  only an ester 
C)  a carboxylic acid and an ester 
D)  None of these, anhydrides do not react with alcohols. 
A)  only a carboxylic acid 
B)  only an ester 
C)  a carboxylic acid and an ester 
D)  None of these, anhydrides do not react with alcohols.

Question 12

Which of the following pairs of reagents can be used to synthesize PET poly(ethylene terephthalate)?

Accepted Answer

A)  ethylene glycol and dimethyl terephthalate 
B)  ethylene glycol and terephthalic acid 
C)  either a or b 
D)  neither a nor b 
A)  ethylene glycol and dimethyl terephthalate 
B)  ethylene glycol and terephthalic acid 
C)  either a or b 
D)  neither a nor b

Question 13

Which of the following are produced when formic anhydride reacts with ethanol?

Accepted Answer

A)  acetic acid and ethyl formate 
B)  acetic acid and methyl formate 
C)  formic acid and methyl formate 
D)  formic acid and ethyl formate 
A)  acetic acid and ethyl formate 
B)  acetic acid and methyl formate 
C)  formic acid and methyl formate 
D)  formic acid and ethyl formate

Question 14

Which of these products would be formed in the following reaction?

Accepted Answer

A)  1-propanol and butanoic acid 
B)  1-propanol and sodium butanoate 
C)  1-butanol and propanoic acid 
D)  1-butanol and sodium propanoate 
A)  1-propanol and butanoic acid 
B)  1-propanol and sodium butanoate 
C)  1-butanol and propanoic acid 
D)  1-butanol and sodium propanoate

Question 15

Which of the following are the products of the hydrolysis of an amide in basic solution?

Accepted Answer

A)  a carboxylic acid and an ammonium salt 
B)  a carboxylic acid and an amine 
C)  a carboxylate salt and an ammonium salt 
D)  a carboxylate salt and an amine 
A)  a carboxylic acid and an ammonium salt 
B)  a carboxylic acid and an amine 
C)  a carboxylate salt and an ammonium salt 
D)  a carboxylate salt and an amine

Question 16

In which decade was the first polyester synthesized?

Accepted Answer

A)  1920s 
B)  1930s 
C)  1940s 
D)  1950s 
A)  1920s 
B)  1930s 
C)  1940s 
D)  1950s

Question 17

Which of the following carboxylic derivatives are so reactive that they are rarely found in nature?

Accepted Answer

A)  amides 
B)  anhydrides 
C)  esters 
D)  none of these 
A)  amides 
B)  anhydrides 
C)  esters 
D)  none of these

Question 18

What is the correct stoichiometric ratio for the reagents when anhydrides react with amines to form an amide and an ammonium carboxylate salt?

Accepted Answer

A)  one mole of amine for each mole of anhydride 
B)  one mole of amine for every two moles of anhydride 
C)  two moles of amine for every mole of anhydride 
D)  The ratio will depend on the identity of the amine and the anhydride. 
A)  one mole of amine for each mole of anhydride 
B)  one mole of amine for every two moles of anhydride 
C)  two moles of amine for every mole of anhydride 
D)  The ratio will depend on the identity of the amine and the anhydride.

Question 19

Which of the following is produced by the acid-catalyzed hydrolysis of methyl propanoate?

Accepted Answer

A)  methanol and propanoic acid 
B)  methanol and a propanoate salt 
C)  propanol and formic acid 
D)  propanol and an formate salt 
A)  methanol and propanoic acid 
B)  methanol and a propanoate salt 
C)  propanol and formic acid 
D)  propanol and an formate salt

Question 20

Which of the following inhibits cyclooxygenase (COX) activity?

Accepted Answer

A)  (R)-ibuprofen 
B)  (S)-ibuprofen 
C)  both a and b 
D)  neither a nor b 
A)  (R)-ibuprofen 
B)  (S)-ibuprofen 
C)  both a and b 
D)  neither a nor b

Exam 19: Carboxylic Anhydrides, Esters, and Amides

Which of the following is the formula of the pyrophosphate ion?

Phosphoric acid, H3PO4, cannot form which types of phosphoric esters?

Which of the following pairs of reagents reacts to give an ester which is an isomer of ethyl acetate?

Which of the following is a biologically important phosphoric ester?

Which of the following polymers is a polyamide?

Which of the following pairs of reagents reacts to give an ester which is an isomer of propyl acetate?

Which statement describes step-growth polymerization?

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

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

Esters do not react with which class of amines to form amides?

Which of the following describes the types of compounds produced when an anhydride reacts with an alcohol?

Which of the following pairs of reagents can be used to synthesize PET poly(ethylene terephthalate)?

Which of the following are produced when formic anhydride reacts with ethanol?

Which of these products would be formed in the following reaction?

Which of the following are the products of the hydrolysis of an amide in basic solution?

In which decade was the first polyester synthesized?

Which of the following carboxylic derivatives are so reactive that they are rarely found in nature?

What is the correct stoichiometric ratio for the reagents when anhydrides react with amines to form an amide and an ammonium carboxylate salt?

Which of the following is produced by the acid-catalyzed hydrolysis of methyl propanoate?

Which of the following inhibits cyclooxygenase (COX) activity?

Matter, Energy, and Measurement

Atoms

Chemical Bonds

Chemical Reactions

Gases, Liquids, and Solids

Solutions and Colloids

Reaction Rates and Chemical Equilibrium

Acids and Bases

Nuclear Chemistry

Organic Chemistry

Alkanes

Alkenes and Alkynes

Benzene and Its Derivatives

Alcohols, Ethers, and Thiols

Chirality: the Handedness of Molecules

Amines

Aldehydes and Ketones

Carboxylic Acids

Carbohydrates

Lipids

Proteins

Enzymes

Chemical Communications: Neurotransmitters and Hormones

Nucleotides, Nucleic Acids, and Heredity

Gene Expression and Protein Synthesis

Bioenergetics: How the Body Converts Food to Energy

Specific Catabolic Pathways: Carbohydrate, Lipid, and Protein Metabolism

Biosynthetic Pathways

Nutrition

Immunochemistry

Body Fluids

Filters

Phosphoric acid, H₃PO₄, cannot form which types of phosphoric esters?