Question

Para-nitro phenol has higher boiling point than ortho-nitrophenol. This is due to

• A. The presence of intermolecular hydrogen bonding between Para-nitro phenol molecules
• B. The presence of intramolecular hydrogen bonding in Para-nitro phenol molecules
• C. The presence of intermolecular hydrogen bonding between ortho-nitro phenol molecules
• D. The absence of intramolecular hydrogen bonding between ortho-nitro phenol molecules

Hint:

Hydrogen bonding significantly influences the physical properties of molecules, such as boiling point.

Answer 1

The Correct Option is A

- The higher boiling point of para-nitro phenol is due to intermolecular hydrogen bonding between the molecules, which increases the boiling point.
- Ortho-nitro phenol has intramolecular hydrogen bonding, which reduces the intermolecular forces and results in a lower boiling point.
Thus, the correct answer is (1) The presence of intermolecular hydrogen bonding between Para-nitro phenol molecules.