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Alcohols, Phenols And Ethers

Question
CBSEENCH12008117

While separating a mixture of ortho and para nitrophenols by stream distillation, name the isomer which is steam volatile. Give reason.

Solution
Ortho-nitrophenol is steam volatile due to intramolecular hydrogen bonding. On other hand p- nitro phenol is less volatile due to having intermolecular hydrogen bonding which cause association of molecules.