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In the diazotisation of anline with sodi...

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

A

Supress the concentration of free aniline available for coupling

B

supress hydrolysis of phenol

C

Ensure a stiochiometric amount of nitrous acid

D

Neutralise the base liberated

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Verified by Experts

The correct Answer is:
A
Excess of HCl is used to convert free aniline to aniline hydrochloride. Other wise free aniline would undergo coupling reaction with benzene diazonium chloride
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