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In the diazotisation of aniline with sod...

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

A

suppress the concentration of free aniline

B

suppress the hydrolysis to phenol

C

ensure a stochiometric amount of nitrous acid

D

neutralise the base liberated

Text Solution

Verified by Experts

The correct Answer is:
A
To suppress the concentration of free amine otherwise it will couple with the diazonium salt to give the corresponding azo dye.
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