Question

The boiling point of p-nitrophenol is higher than that of o-nitrophenol because

• A. $NO_2$ group atp-position behave in a different way from that at o-position
• B. intramolecular hydrogen bonding exists in p-nitrophenol
• C. there is intermolecular hydrogen bonding in p-nitrophenol
• D. p-nitrophenol has a higher molecular weight than o-nitrophenol

Answer 1

Answer: (C)

there is intermolecular hydrogen bonding in p-nitrophenol

Answer 2

The boiling point of p-nitrophenol is higher than that of o-nitrophenol because p-nitrophenol have intermolecular hydrogen bonding whereas o-nitrophenol have intramolecular H-bonding as given below