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

supress the concentration of free aniline available for coupling

ensure a stoichiometric amount of nitrous acid

In the diazotisation of arylamines with sodium nitrite and hydrochlori

1.	In the diazotisation of arylamines with sodium nitrite and hydrochloric 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 stoichiometric amount of nitrous acid
D.	neutralise the base liberated
Answer» B. supress hydrolysis of phenol

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

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