Question

The boiling point of phenols are higher than the hydrocarbons of comparable masses due to:

• A. more polarising power
• B. presence of hydrogen bonding
• C. resonance stabilization
• D. acidic character

Answer 1

The correct option is B presence of hydrogen bonding

Boiling point of alcohol and phenol are higher than that of ​hydrocarbons, ethers and halo compounds of comparable molar masses due to presence of Hydrogen bonding​. Hydrogen bonding is a stronger force of attraction existing between molecules of phenols as compared to vander waals forces of attraction existing between alkane molecules. (they are weaker forces)
therefore Boiling point of phenol is more than hydrocarbon due to presence of hydrogen bonding.