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In the diazotisation of anline with sodium nitrite and hydrochloride acid, an excess of hydrochloric acid is used primarily toA. Supress the concentration of free aniline available for couplingB. supress hydrolysis of phenolC. Ensure a stiochiometric amount of nitrous acidD. Neutralise the base liberated |
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Answer» Correct Answer - 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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