EXPERIMENT 14

What functional group characterizes phenols?

• Carbonyl

• Hydroxyl

• Amine

• Carboxyl

How are monohydric phenols named in the IUPAC system?

• As derivatives of benzene

• As derivatives of alcohols

• As derivatives of carboxylic acids

• As derivatives of phenol

Which of the following is NOT an example of a phenol?

• Phenol

• Catechol

• Thymol

• Acetone

Where are phenols and cresols obtained from?

• Petroleum

• Natural gas

• Coal tar

• Crude oil

How is phenol prepared in the laboratory?

• By the oxidation of alcohols

• By the reduction of aldehydes

• By the diazotization of primary aromatic amines

• By the dehydration of alkanes

Why are phenols more acidic than alcohols?

• Due to resonance stabilization

• Due to the presence of hydrogen bonding

• Due to the presence of electron-donating groups

• Due to the presence of electron-withdrawing groups

What is the conjugate base of phenol called?

• Phenylate ion

• Phenoxide ion

• Phenyl ion

• Phenolate ion

How do phenols react with dilute aqueous sodium hydroxide?

• They form alcohols

• They form esters

• They form phenoxide salts

• They form ethers

What color compound is formed when phenols react with ferric chloride?

• Red

• Green

• Purple

• Yellow

What is responsible for the purple color formed when phenols react with ferric chloride?

• Formation of a ferric phenoxide salt

• Formation of a ferric alcoholate salt

• Formation of a ferric carboxylate salt

• Formation of a ferric ester salt