Carboxylic acids and their derivatives
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Questions and Answers

What is the order of reactivity of alcohols towards RCOONa in esterification?

  • sec-alcohol > pri-alcohol > tert-alcohol > methyl alcohol
  • tert-alcohol > sec-alcohol > pri-alcohol > methyl alcohol (correct)
  • pri-alcohol > sec-alcohol > tert-alcohol > methyl alcohol
  • methyl alcohol > pri-alcohol > sec-alcohol > tert-alcohol

    • What is the role of acidic strength of carboxylic acid in esterification?

  • It increases the reaction rate
  • It plays a major role in determining the reaction rate
  • It has no effect on the reaction rate
  • It plays a minor role in determining the reaction rate (correct)

    • What is the product formed when silver acetate reacts with bromine in the Hunsdiecker reaction?

  • Silver bromide
  • Methyl acetate
  • Acetic anhydride
  • Methyl bromide (correct)

    • What is the reaction called when methanol is taken in place of ethanol in esterification?

    <p>Trans esterification</p> Signup and view all the answers

    What is the product formed when a carboxylic acid reacts with ammonia to form an amide?

    <p>Acetamide</p> Signup and view all the answers

    What is the product formed when a carboxylic acid reacts with a metal to form a salt and hydrogen?

    <p>Alkane</p> Signup and view all the answers

    What is the product formed when Acetyl chloride reacts with Salicylic acid?

    <p>Aspirin</p> Signup and view all the answers

    What is the product formed when Acetyl chloride reacts with ammonia?

    <p>Acetamide</p> Signup and view all the answers

    What is the reaction called when Acetyl chloride reacts with hydrogen in the presence of a catalyst to form Acetaldehyde?

    <p>Rosenmund reaction</p> Signup and view all the answers

    What is the product formed when Acetyl chloride reacts with diethyl ether?

    <p>Ethyl acetate</p> Signup and view all the answers

    What happens when Acetyl chloride reacts with amines?

    <p>Form substituted amides</p> Signup and view all the answers

    What is the product formed when Acetyl chloride reacts with potassium cyanide?

    <p>Acetophenone</p> Signup and view all the answers

    What is the reaction of ester with alkalies known as?

    <p>Saponification</p> Signup and view all the answers

    Which of the following is a characteristic of acid hydrolysis of esters?

    <p>It is reversible</p> Signup and view all the answers

    What is the product formed when ethyl acetate reacts with ammonia?

    <p>Acetamide</p> Signup and view all the answers

    What is the catalyst commonly used in the catalytic hydrogenation of esters?

    <p>Copper chromate</p> Signup and view all the answers

    What is the reaction known as when a metal (Na) is used to reduce an ester in the presence of an alcohol?

    <p>Bouveault-Blanc reduction</p> Signup and view all the answers

    What is the product formed when ethyl acetate is reduced using LiAlH4?

    <p>Ethyl alcohol</p> Signup and view all the answers

    What is the result of inductive effect on the reactivity of acyl derivatives?

    <p>Decreases the reactivity due to -I effect</p> Signup and view all the answers

    What is the product formed when phthalic acid reacts with ammonia?

    <p>Phthalic amide</p> Signup and view all the answers

    Which method of preparation of acyl halides involves the reaction of carboxylic acid with PCl5?

    <p>Halogenation</p> Signup and view all the answers

    What is the general structure of acyl halides?

    <p>R-C-X</p> Signup and view all the answers

    What type of reactions are acyl derivatives characterised by?

    <p>Nucleophilic substitution</p> Signup and view all the answers

    What is the use of phthalic anhydride in the industry?

    <p>Manufacture of plastics and dyes</p> Signup and view all the answers

    What is the major reason for the lower boiling points of acyl chlorides compared to their parent acids?

    <p>They are unable to form intermolecular hydrogen bonds</p> Signup and view all the answers

    Which of the following reactions is characterized by the formation of a hydrochloric acid byproduct?

    <p>Hydrolysis of acyl chlorides</p> Signup and view all the answers

    What is the primary reason for the increased reactivity of acyl chlorides compared to esters and amides?

    <p>They are less stabilized by resonance</p> Signup and view all the answers

    Which of the following reactions is NOT a characteristic of acyl chlorides?

    <p>Halogenation to form alkyl halides</p> Signup and view all the answers

    What is the primary reason for the pungent and irritating odor of acyl chlorides?

    <p>They are strong lachrymators</p> Signup and view all the answers

    Which of the following is a characteristic of acyl chlorides that is NOT true for their parent acids?

    <p>They fume in air due to hydrolysis</p> Signup and view all the answers

    What is the product formed when acetic acid reacts with sodium hydroxide and heat?

    <p>Sodium acetate and water</p> Signup and view all the answers

    What is the reaction known as when a carboxylic acid reacts with ammonia to form an amide?

    <p>Ammonolysis</p> Signup and view all the answers

    What is the product formed when a carboxylic acid is reduced with hydrogen in the presence of a catalyst?

    <p>An alcohol</p> Signup and view all the answers

    What is the reaction known as when a carboxylic acid reacts with Cl2 or Br2 in the presence of a small amount of red phosphorus?

    <p>Hell-Volhard-Zelinsky reaction</p> Signup and view all the answers

    What is the product formed when a carboxylic acid is heated with sodium hydroxide and calcium oxide?

    <p>A salt and water</p> Signup and view all the answers

    What is the product formed when acetyl chloride reacts with sodium hydroxide?

    <p>Acetic acid and sodium chloride</p> Signup and view all the answers

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