Question : Which organic chemical compound is reacted with nitrous acid at 273-278K to prepare benzene diazonium chloride?
Option 1: Hydrazine
Option 2: Toluene
Option 3: Aniline
Option 4: Pyridine
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Correct Answer: Aniline
Solution : The correct option is Aniline.
To prepare benzene diazonium chloride, aniline (C 6 H 5 NH 2 ) is typically reacted with nitrous acid (HNO 2 ) at a low temperature of 273-278K. This reaction is known as the diazotization of aniline and is a common method for preparing diazonium salts.
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