Question

Preparation of phenol form benzene sulphonic acid

Answer 1

Benzene sulphonic acid is reacted with NaODH to form sodium benzene sulphonate, which is fused with excess NaOH to give sodium phenoxide.

Sodium phenoxide so obtained is acidified to get phenol.

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Answer 2

Answer:

Benzene sulphonic acid is reacted with NaOH to form sodium benzene sulphonate, which is fused with excess NaOH to give sodium phenoxide. Sodium phenoxide so obtained is acidified to get phenol.

Step-by-step explanation:

step1=Sulphonation of benzene.

Benzene is heated with concentrated sulphuric acid to form benzene sulphonic acid.

Step-2--Convertion of benzene sulphonic acid in to phenol.

Benzene sulphonic acid is reacted with NaOH to form sodium benzene sulphonate, which is fused with excess NaOH to give sodium phenoxide.

Sodium phenoxide so obtained is acidified to get phenol.