Question

With dilute nitric acid at low temperature (298 k), phenol yields
a.A mixture of ortho and para
b.P - nitrophenol nitro phenols
c.M-nitrophenol
d.O - nitrophenol

Answer 1

Answer:

mixture of ortho and para nitrophenol

Explanation:

when phenol is treated with dilute nitric acid at 293k gives a mixture of ortho and para nitrophenol

Answer 2

Answer:

Electrophilic aromatic substitution reactions occur when an electrophile replaces one or more hydrogen atoms on an aromatic ring. Because of their high electron density, phenols are extremely susceptible to electrophilic substitution reactions.

Explanation:

Phenolic Nitration: After being treated with dilute nitric acid, phenols undergo nitration at a low temperature (298 K), yielding a mixture of ortho and para-nitrophenols.

By steam distillation, the mixture is further separated into ortho and para nitrophenols based on their volatility.

Because of intramolecular hydrogen bonding, o-nitrophenol is more volatile. Because of intermolecular hydrogen bonding, p-nitrophenol is less volatile and has a high boiling point.

Hence, the correct option is (a) A mixture of ortho and para.

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