A) higher than that of A
B) lower than that of B
C) same as that of A
D) can be higher or lower depending upon the size of the vessel.
Correct Answer: A
Solution :
Due to intramolecular H-bonding in o-nitrophenol it exists as a monomer while due to intermolecular H-bonding in p-nitrophenol it exists as an associate molecule. As a result, vapour pressure of a o-nitrophenol is higher than that of p-nitrophenol.
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