Question

The most suitable method of the separation of a mixture of ortho and para nitrophenol mixed in the ratio of 1 : 1 is

• A. distillation
• B. crystallisation
• C. vaporisation
• D. colour spectrum

Answer 1

The Correct Option is A

In ortho and para-nitrophenol, ortho-nitrophenol has intramolecular H-bonding. So, it has lower boiling point. Intermolecular H-bonding more strong then intramolecular H-bonding. Whereas para-nitrophenol has intermolecular H-bonding. So, it has higher boiling point. Due to difference in boiling points ortho and para-nitrophenol can be separated from each other by distillation.