Question 1

Which of the following is the correct order of decreasing reactivity for carboxylic acid derivatives?

Accepted Answer

Acyl halide \u003e Acid anhydride \u003e Ester \u003e Amide

Question 2

What is the main reason acyl chlorides are the most reactive carboxylic acid derivative?

Accepted Answer

Acyl chlorides have the least stabilized carbonyl group due to poor electron donation from chlorine

Question 3

Which carboxylic acid derivative is most commonly found in biological systems such as DNA and proteins?

Accepted Answer

Esters and amides

Question 4

What is the product when an ester undergoes base hydrolysis (saponification)?

Accepted Answer

Carboxylate salt and alcohol

Question 5

Which of the following best describes the Fischer esterification reaction?

Accepted Answer

Carboxylic acid reacts with alcohol in the presence of acid catalyst to form an ester

Question 6

What is the correct IUPAC name for the compound with the structure $$\mathrm{CH_3CH_2CH_2COCl}$$?

Accepted Answer

Butanoyl chloride

Question 7

Which statement about amides is TRUE?

Accepted Answer

Amides are the least reactive and most stabilized carboxylic acid derivatives

Question 8

Which reaction is used in the industrial production of biodiesel?

Accepted Answer

Trans-esterification of esters with alcohols

Question 9

What is the product of the reduction of an amide with $$\mathrm{$$LiAlH_4$$}$$?

Accepted Answer

Amine

Question 10

Which of the following is the correct naming convention for an ester?

Accepted Answer

Name the alkyl group attached to oxygen first, then the carboxylic acid with -ate ending

Question 11

Which of the following reactions is responsible for the formation of soap from fats and oils?

Accepted Answer

Base hydrolysis (saponification)

Question 12

What is the main structural difference between an acid anhydride and an ester?

Accepted Answer

An acid anhydride has two acyl groups bonded to the same oxygen atom, while an ester has one acyl and one alkyl group bonded to oxygen

Question 13

Which of the following is a biological example of an ester?

Accepted Answer

Acetyl CoA (thioester)

Question 14

What is the product when an acyl halide reacts with water?

Accepted Answer

Carboxylic acid

Question 15

Which atom's lone pair donation most effectively stabilizes the carbonyl group in carboxylic acid derivatives?

Accepted Answer

Nitrogen in amides

Question 16

Which of the following is NOT a typical reaction of acyl halides?

Accepted Answer

Trans-esterification

Question 17

What is the correct name for the compound $$\mathrm{CH_3CH_2COOCH_3}$$?

Accepted Answer

Methyl propanoate

Question 18

Which of the following statements about the industrial importance of carboxylic acid derivatives is correct?

Accepted Answer

Synthetic chemists use knowledge of reactivity to design rational syntheses of organic compounds

Question 19

Which reaction occurs enzymatically in ribosomes during protein synthesis?

Accepted Answer

Formation of peptide (amide) bonds between amino acids

Carboxylic Acid Derivatives: Structure, Nomenclature, Reactivity, and Biological Importance

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