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+1 vote
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in Principals of Organic Chemistry by (79.0k points)
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The most suitable method for the separation of a 1 : 1 mixture of ortho-and para-nitrophenols is

(a) filtration

(b) sublimation

(c) crystallisation

(d) steam distillation.

1 Answer

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Best answer

Correct option (d) steam distillation.

Explanation:

Steam distillation is employed as there is a large difference between boiling points of ortho and para-nitrophenols. This is due to the presence of intramolecular H-bonding in the case of o-nitrophenol (so low b.pt.) and intermolecular H-bonding in p-nitrophenol (so high b.pt.).

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