Q. Out of the two compounds shown below, the vapour pressure of B at a particular temperature is expected to beChemistry Question Image

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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.