Organic Chemistry Some Basic Principles and Techniques - Result Question 39
####45. The most suitable method of separation of $1: 1$ mixture of ortho and para-nitrophenols is :
[1994, 2017]
(a) Chromatography
(b) Crystallisation
(c) Steam distillation
(d) Sublimation
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Solution:
- (c) The $o$-isomer is steam volatile due to intramolecular $H$-bonding. The $p$-isomer is not steam volatile due to intermolecular $H$-bonding or association of molecules. Thus, both can be separated by steam distillation.
