Give one chemical test to distinguish between the following pairs of compounds Ethylamine and aniline
The azo-dye test can differentiate between ethylamine and aniline. A reaction of aromatic amines with HNO2HNO2 (NaNO2NaNO2 + dil.HClHCl ) at 0-5°C produces a dye, the produced dye then undergoes a reaction with an alkaline solution of 2-naphthol. The colour of the dye is generally yellow, red, or orange. Under comparable conditions, aliphatic amines produce a rapid effervescence (due to the development of N2N2 gas).
