Question

The melting point of phenol is relatively high for an aryl compound because of the:

• A. hydrogen bonding
• B. ionic bonding
• C. covalent bonding
• D. all of them

Answer 1

Answer: (A)

hydrogen bonding

Melting point of phenol (42 deg C) is relatively high for an aryl compound because of the hydrogen bonding.

The H atom of $-OH$ group of one molecule of phenol is involved in hydrogen bond formation with $O$ atom of $-OH$ group of second molecule of phenol.

This leads to intermolecular association and increases melting point.

Option A is correct.