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(A) The given reaction is the sulphonation of chlorobenzene. Halogen atoms are ortho-para directing but deactivating groups due to the $-I$ effect. In

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Concentrated Sulphuric acid

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(A) The given reaction is the sulphonation of chlorobenzene. Halogen atoms are ortho-para directing but deactivating groups due to the $-I$ effect. In the presence of concentrated sulphuric acid $(H_2SO_4)$,chlorobenzene undergoes an aromatic electrophilic substitution reaction. The electrophile involved is sulphur trioxide $(SO_3)$. The reaction produces $2-$chlorobenzenesulphonic acid (minor product) and $4-$chlorobenzenesulphonic acid (major product). Therefore,concentrated sulphuric acid is the best suitable reagent for this reaction.

Identify the best suitable reagent for the following reaction.

Similar Questions

Assertion : $4-$Nitrochlorobenzene undergoes nucleophilic substitution more readily than chlorobenzene.
Reason : Chlorobenzene undergoes nucleophilic substitution by elimination-addition mechanism while $4-$nitrochlorobenzene undergoes nucleophilic substitution by addition-elimination mechanism.

The azo-dye $(Y)$ formed in the following reactions is: $\text{Sulphanilic acid} + NaNO_2 + CH_3COOH \rightarrow X$; $X + \text{1-naphthylamine} \rightarrow Y$. Identify $Y$.

Which of the following is least reactive towards $S_NAr$?

The major product of the reaction is:

The product $(P)$ will be

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