Properties of functional groups Knowledge-Based Practice

Questions

1. 1.

   Which organic functional group reacts with metallic sodium to liberate hydrogen gas, but is insufficiently acidic to form a salt when treated with dilute aqueous sodium hydroxide?

   • A) Carboxylic acid
   • B) Phenol
   • C) Alcohol
   • D) Ether
2. 2.

   Which functional group features a carbonyl carbon bonded to an alkoxy group and undergoes alkaline hydrolysis to yield a carboxylate salt and an alcohol?

   • A) Anhydride
   • B) Ether
   • C) Amide
   • D) Ester
3. 3.

   Which functional group can be readily oxidized by mild oxidizing agents, such as Tollens' reagent, due to the presence of a hydrogen atom bonded directly to the carbonyl carbon?

   • A) Aldehyde
   • B) Ketone
   • C) Ester
   • D) Ether
4. 4.

   Which of the following functional groups acts as a Brønsted–Lowry base in aqueous solution due to a lone pair of electrons on a nitrogen atom?

   • A) Ester
   • B) Aldehyde
   • C) Ether
   • D) Amine
5. 5.

   Among organic compounds of comparable molecular weight, which functional group generally confers the highest boiling point due to its ability to form stable hydrogen-bonded dimers?

   • A) Ester ($\text{–COOR}$)
   • B) Carboxylic acid ($\text{–COOH}$)
   • C) Alcohol ($\text{–OH}$)
   • D) Aldehyde ($\text{–CHO}$)

Answers and step-by-step solutions appear after you finish the test.