In the diazotisation of aniline with sodium nitrite and hydrochloric acid, an excess of hydrochloric acid is used primarily to [Pb. PMT 1998]

Suppress the concentration of free aniline available for coupling

Insure a stoichiometric amount of nitrous acid

In the diazotisation of aniline with sodium nitrite and hydrochloric a

1.	In the diazotisation of aniline with sodium nitrite and hydrochloric acid, an excess of hydrochloric acid is used primarily to [Pb. PMT 1998]
A.	Suppress the concentration of free aniline available for coupling
B.	Suppress hydrolysis of phenol
C.	Insure a stoichiometric amount of nitrous acid
D.	Neutralize the base liberated
Answer» B. Suppress hydrolysis of phenol

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In the diazotisation of aniline with sodium nitrite and hydrochloric acid, an excess of hydrochloric acid is used primarily to [Pb. PMT 1998]

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