Question 1

Which combination of reactants is commonly used to synthesize amides at room temperature?

Accepted Answer

A)  an amine and an anhydride 
B)  an amine and an alcohol 
C)  an amine and a carboxylic acid 
D)  none of these 
A)  an amine and an anhydride 
B)  an amine and an alcohol 
C)  an amine and a carboxylic acid 
D)  none of these

Question 2

What is the IUPAC name of a compound with the common name adipamide?

Accepted Answer

A)  hexanediamide 
B)  benzamide 
C)  butanamide 
D)  pentanamide 
A)  hexanediamide 
B)  benzamide 
C)  butanamide 
D)  pentanamide

Question 3

Which of the following is not a step-growth polymer?

Accepted Answer

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

Question 4

What is the common name of the given compound?

Accepted Answer

A)  adipamide 
B)  benzamide 
C)  butyramide 
D)  propanamide 
A)  adipamide 
B)  benzamide 
C)  butyramide 
D)  propanamide

Question 5

Which of the following products is formed when acetic acid reacts with propanol?

Accepted Answer

A)  ethyl acetate 
B)  ethyl propanoate 
C)  propyl acetate 
D)  none of these 
A)  ethyl acetate 
B)  ethyl propanoate 
C)  propyl acetate 
D)  none of these

Question 6

Salicin is hydrolyzed in an aqueous acidic solution to form an intermediate. Then, the intermediate is oxidized to form a product. Identify the product formed at the end of the reaction.

Accepted Answer

A)  adipic acid 
B)  ibuprofen 
C)  salicylic acid 
D)  salicylate 
A)  adipic acid 
B)  ibuprofen 
C)  salicylic acid 
D)  salicylate

Question 7

Identify the functional group present in natural pyrethrins.

Accepted Answer

A)  amide 
B)  anhydride 
C)  ester 
D)  none of these 
A)  amide 
B)  anhydride 
C)  ester 
D)  none of these

Question 8

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

Question 9

Which of the following compounds has β-lactam ring in its chemical structure?

Accepted Answer

A)  pyrethrin 
B)  aspirin 
C)  amoxicillin 
D)  ibuprofen 
A)  pyrethrin 
B)  aspirin 
C)  amoxicillin 
D)  ibuprofen

Question 10

Identify the compound obtained when an amine reacts with a carboxylic acid at room temperature.

Accepted Answer

A)  an amide 
B)  an amino acid 
C)  an ammonium carboxylate salt 
D)  none of these 
A)  an amide 
B)  an amino acid 
C)  an ammonium carboxylate salt 
D)  none of these

Question 11

Which of the following pairs of reactants is used to synthesize poly(ethylene terephthalate)?

Accepted Answer

A)  ethylene and dimethyl terephthalate 
B)  ethylene glycol and dimethyl terephthalate 
C)  ethylene and terephthalic acid 
D)  ethylene glycol and terephthalic acid 
A)  ethylene and dimethyl terephthalate 
B)  ethylene glycol and dimethyl terephthalate 
C)  ethylene and terephthalic acid 
D)  ethylene glycol and terephthalic acid

Question 12

Which statement about the acid-catalyzed hydrolysis of esters is not true?

Accepted Answer

A)  Using one equivalent of water gives a high yield of products. 
B)  Using excess water gives a high yield of products. 
C)  Removing water from the equilibrium mixture gives a high yield of products. 
D)  All these statements are false. 
A)  Using one equivalent of water gives a high yield of products. 
B)  Using excess water gives a high yield of products. 
C)  Removing water from the equilibrium mixture gives a high yield of products. 
D)  All these statements are false.

Question 13

Which of the following occurs during the formation of an amide?

Accepted Answer

A)  A carboxylic acid loses its -OH group and an ammonia or an amine loses its -H atom. 
B)  A carboxylic acid loses its -OH group and an alcohol loses its -H atom. 
C)  An alcohol loses its -OH group and an ammonia or an amine loses its -H atom. 
D)  None of these are correct. 
A)  A carboxylic acid loses its -OH group and an ammonia or an amine loses its -H atom. 
B)  A carboxylic acid loses its -OH group and an alcohol loses its -H atom. 
C)  An alcohol loses its -OH group and an ammonia or an amine loses its -H atom. 
D)  None of these are correct.

Question 14

Identify a tertiary amide.

Accepted Answer

A)  N,N-dimethylformamide 
B)  N-methylacetamide 
C)  acetamide 
D)  propanamide 
A)  N,N-dimethylformamide 
B)  N-methylacetamide 
C)  acetamide 
D)  propanamide

Question 15

Which of the following statements is true of ester hydrolysis?

Accepted Answer

A)  It occurs rapidly even in cold water. 
B)  It occurs rapidly at room temperature. 
C)  It occurs rapidly in boiling water. 
D)  None of these statements are correct. 
A)  It occurs rapidly even in cold water. 
B)  It occurs rapidly at room temperature. 
C)  It occurs rapidly in boiling water. 
D)  None of these statements are correct.

Question 16

Which of the following elements is not found in phosgene?

Accepted Answer

A)  carbon 
B)  chlorine 
C)  oxygen 
D)  phosphorus 
A)  carbon 
B)  chlorine 
C)  oxygen 
D)  phosphorus

Question 17

Which pair of reactants forms butyl formate during an esterification reaction?

Accepted Answer

A)  formic acid and 1-butanol 
B)  formamide and 1-butanol 
C)  butanoic acid and ethanol 
D)  butanamide and methanol 
A)  formic acid and 1-butanol 
B)  formamide and 1-butanol 
C)  butanoic acid and ethanol 
D)  butanamide and methanol

Question 18

Which of the following carboxylic derivatives 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 19

Which of the following by-products is formed when Lexan is synthesized?

Accepted Answer

A)  HCl 
B)  H2O 
C)  CH3OH 
D)  NaCl 
A)  HCl 
B)  H2O 
C)  CH3OH 
D)  NaCl

Question 20

Identify the name of the given compound.

Accepted Answer

A)  carboxylic acid 
B)  dihydroxy formaldehyde 
C)  carbonic acid 
D)  dihydroxy methanone 
A)  carboxylic acid 
B)  dihydroxy formaldehyde 
C)  carbonic acid 
D)  dihydroxy methanone

Exam 18: Carboxylic Anhydrides, Esters, and Amides

Which combination of reactants is commonly used to synthesize amides at room temperature?

What is the IUPAC name of a compound with the common name adipamide?

Which of the following is not a step-growth polymer?

What is the common name of the given compound?

Which of the following products is formed when acetic acid reacts with propanol?

Salicin is hydrolyzed in an aqueous acidic solution to form an intermediate. Then, the intermediate is oxidized to form a product. Identify the product formed at the end of the reaction.

Identify the functional group present in natural pyrethrins.

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 compounds has β-lactam ring in its chemical structure?

Identify the compound obtained when an amine reacts with a carboxylic acid at room temperature.

Which of the following pairs of reactants is used to synthesize poly(ethylene terephthalate)?

Which statement about the acid-catalyzed hydrolysis of esters is not true?

Which of the following occurs during the formation of an amide?

Identify a tertiary amide.

Which of the following statements is true of ester hydrolysis?

Which of the following elements is not found in phosgene?

Which pair of reactants forms butyl formate during an esterification reaction?

Which of the following carboxylic derivatives are rarely found in nature?

Which of the following by-products is formed when Lexan is synthesized?

Identify the name of the given compound.

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