Question 1

What products are obtained when acetamide is hydrolyzed in a solution which contains sodium hydroxide?

Accepted Answer

A)   sodium acetate and acetic acid
B)   sodium acetate and ammonia
C)   acetic acid and ammonium chloride
D)   acetic acid and ammoniaE) None of the above
F) A) and C)

Question 2

Pyridoxal phosphate is a metabolically active form of which of the following vitamins?

Accepted Answer

A)   vitamin B6
B)   vitamin B12
C)   vitamin D
D)   vitamin EE) B) and D)
F) A) and C)

Question 3

Which of the following statements best describes the functional group of phosphoric anhydrides?

Accepted Answer

A)   two phosphonyl groups bonded to the same carbon
B)   two phosphoryl groups bonded to the same carbon
C)   two phosphonyl groups bonded to the same oxygen atom
D)   two phosphoryl groups bonded to the same oxygen atomE) A) and C)
F) C) and D)

Question 4

What is the minimum number of carbon atoms present in an anhydride?

Accepted Answer

A)   1
B)   2
C)   3
D)   4E) C) and D)
F) B) and D)

Question 5

Which is following is true of the hydrolysis of esters?

Accepted Answer

A)   It occurs rapidly, even in cold water.
B)   It occurs rapidly in water at room temperature.
C)   It occurs rapidly in boiling water.
D)   none of the aboveE) A) and C)
F) B) and C)

Question 6

What are the organic products obtained from the following reaction?

Accepted Answer

A)   
B)   
C)   
D)   E) None of the above
F) A) and C)

Question 7

Which of the following is an example of a polyester?

Accepted Answer

A)   Lexan
B)   nylon-66
C)   polystyrene
D)   poly(ethylene terephthalate) E) A) and D)
F) A) and B)

Question 8

Which of the following pairs of reagents can be used to synthesize the polycarbonate Lexan?

Accepted Answer

A)   phosgene and bisphenol A
B)   phosgene and the disodium salt of bisphenol A
C)   H2CO3 and bisphenol A
D)   H2CO3 and the disodium salt of bisphenol AE) A) and D)
F) None of the above

Question 9

Which of the following will be formed when an amine and a carboxylic acid react at room temperature?

Accepted Answer

A)   an amide
B)   an amino acid
C)   an ammonium carboxylate salt
D)   none of theseE) All of the above
F) C) and D)

Question 10

Which of the following occurs when water is added to low molecular weight anhydrides?

Accepted Answer

A)   The anhydride physically absorbs the water, but no chemical reaction occurs.
B)   The anhydride reacts slowly to produce two molecules of carboxylic acid.
C)   The anhydride reacts readily to produce two molecules of carboxylic acid.
D)   What happens is highly dependent on the identity of the anhydride.E) B) and D)
F) B) and C)

Question 11

Which of the following can be formed when the ammonium salt derived from reaction of a carboxylic acid and an amine is heated to a sufficiently high temperature?

Accepted Answer

A)   an amide
B)   an amino acid
C)   Either a or b, it depends on the identity of the salt.
D)   neither a nor bE) B) and C)
F) A) and B)

Question 12

Which of the following is not an isomer of ethyl acetate?

Accepted Answer

A)   methyl propanoate
B)   propyl formate
C)   butanoic acid
D)   None, they are all isomers of ethyl acetate.E) None of the above
F) A) and D)

Question 13

Which of the following is formed by the reaction of propanoic anhydride with diethylamine?

Accepted Answer

A)   propanamide
B)   N-ethylpropanamide
C)   N,N-diethylpropanamide
D)   ethyl propanoateE) All of the above
F) None of the above

Question 14

Which of the following can be used to mediate the hydrolysis of esters?

Accepted Answer

A)   aqueous sulfuric acid
B)   aqueous sodium hydroxide
C)   either a or b
D)   neither a nor bE) All of the above
F) A) and C)

Question 15

What is the IUPAC name for the following compound?

Accepted Answer

A)   diamino pentanoate
B)   pentanediamine
C)   pentanediamide
D)   diamidopropaneE) A) and D)
F) None of the above

Question 16

What products are obtained when acetamide is hydrolyzed in a solution which contains hydrochloric acid?

Accepted Answer

A)   sodium acetate and acetic acid
B)   sodium acetate and ammonia
C)   acetic acid and ammonium chloride
D)   acetic acid and ammoniaE) A) and D)
F) C) and D)

Question 17

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

Accepted Answer

A)   1
B)   2
C)   3
D)   4E) None of the above
F) A) and B)

Question 18

Which of the following esters does not have an isomeric ester?

Accepted Answer

A)   methyl formate
B)   ethyl formate
C)   methyl acetate
D)   ethyl acetateE) All of the above
F) B) and D)

Question 19

Which of the following is not a β-lactam antibiotic?

Accepted Answer

A)   Cephalexin
B)   Amoxicillin
C)   Permethrin
D)   Clavulanic acidE) C) and D)
F) A) and B)

Question 20

Which of the following statements is true regarding the hydrolysis of amides?

Accepted Answer

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

Exam 19: Carboxylic Anhydrides, Esters, and Amides

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

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Which of the following is not an isomer of ethyl acetate?

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What is the IUPAC name for the following compound?

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Which of the following is an example of a polyester?

Correct AnswerverifiedShow Answer

What products are obtained when acetamide is hydrolyzed in a solution which contains hydrochloric acid?

Correct AnswerverifiedShow Answer

Which of the following statements best describes the functional group of phosphoric anhydrides?

Correct AnswerverifiedShow Answer

Which of the following statements is true regarding the hydrolysis of amides?

Correct AnswerverifiedShow Answer

Which of the following will be formed when an amine and a carboxylic acid react at room temperature?

Correct AnswerverifiedShow Answer

Which of the following esters does not have an isomeric ester?

Correct AnswerverifiedShow Answer

What are the organic products obtained from the following reaction?

Correct AnswerverifiedShow Answer

What products are obtained when acetamide is hydrolyzed in a solution which contains sodium hydroxide?

Correct AnswerverifiedShow Answer

Which of the following can be used to mediate the hydrolysis of esters?

Correct AnswerverifiedShow Answer

Pyridoxal phosphate is a metabolically active form of which of the following vitamins?

Correct AnswerverifiedShow Answer

What is the minimum number of carbon atoms present in an anhydride?

Correct AnswerverifiedShow Answer

Which of the following can be formed when the ammonium salt derived from reaction of a carboxylic acid and an amine is heated to a sufficiently high temperature?

Correct AnswerverifiedShow Answer

Which is following is true of the hydrolysis of esters?

Correct AnswerverifiedShow Answer

Which of the following is formed by the reaction of propanoic anhydride with diethylamine?

Correct AnswerverifiedShow Answer

Which of the following is not a β-lactam antibiotic?

Correct AnswerverifiedShow Answer

Which of the following pairs of reagents can be used to synthesize the polycarbonate Lexan?

Correct AnswerverifiedShow Answer

Which of the following occurs when water is added to low molecular weight anhydrides?

Correct AnswerverifiedShow Answer

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