2
Question
The most suitable method of separation of equal (1:1) mixture of ortho-nitrophenol and para-nitrophenol is:
The most suitable method of separation of equal (1:1) mixture of ortho-nitrophenol and para-nitrophenol is:
Open in App
Solution
The correct option is C Distillation
The compound, o-nitrophenol shows intramolecular hydrogen bonding, whereas p-nitrophenol shows intermolecular hydrogen bonding.
Two molecules of p-nitrophenol associate to form a dimer. Such dimer formation is not possible in o-nitrophenol.
Hence, p-nitrophenol boils at a higher temperature because of this dimer formation.
Thus, the boiling point of o-nitrophenol is much lower than the boiling point of p-nitrophenol. Hence, these two isomers can be separated by distillation.
Option B is correct.
The compound, o-nitrophenol shows intramolecular hydrogen bonding, whereas p-nitrophenol shows intermolecular hydrogen bonding.
Two molecules of p-nitrophenol associate to form a dimer. Such dimer formation is not possible in o-nitrophenol.
Hence, p-nitrophenol boils at a higher temperature because of this dimer formation.
Thus, the boiling point of o-nitrophenol is much lower than the boiling point of p-nitrophenol. Hence, these two isomers can be separated by distillation.
Option B is correct.
Suggest Corrections
0
Similar questions
View More
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
