Question

give the reagent and conditions necessary to prepare phenol from chlorobenzene,benzenesulfonic acid​

Answer 1

Answer:

Preparation of Phenols from Haloarenes

Chlorobenzene is an example of a haloarene which is formed by the monosubstitution of the benzene ring. When chlorobenzene is fused with sodium hydroxide at 623K and 320 atm, sodium phenoxide is produced. Finally, sodium phenoxide on acidification gives phenol

Explanation:

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Answer 2

Explanation:

Conversion -

1. Chlorobezene to phenol
2. benzene sulphonic acid to phenol

Solution -

1)

When we treat chlorobezene with NaOH in 623 K and in 300 atm pressure then it get converted into sodium phenoxide. Then, we treat sodium phenoxide with dilute HCl then it forms phenol and sodium chloride is released.

Process -

( Refer to the attachment. )

2)

When we heat benzene sulphonic acid with molten NaOH then it get converted into sodium phenoxide. Then, we treat sodium phenoxide with dilute HCl then it forms phenol and sodium chloride is released.

Process -

( Refer to the attachment. )