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  4. In the diazotisation of aniline with sodium nitrite and hydrochloric acid, the excess of hydrochloric acid is used primarily to

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Q. In the diazotisation of aniline with sodium nitrite and hydrochloric acid, the excess of hydrochloric acid is used primarily to

Amines

Solution:

Mineral acid should be added in excess in diazotisation of aryl amines so, as to prevent the coupling of benzene diazonium chloride with excess of aryl amine.