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Question
Give one chemical test to distinguish between the following pair of compounds.
Aniline and N-methylaniline.
Solution 1
Aniline and N-methylaniline can be distinguished using the Carbylamine test. Primary amines, on heating with chloroform and ethanolic potassium hydroxide, form foul-smelling isocyanides or carbylamines. Aniline, being an aromatic primary amine, gives positive carbylamine test. However, N-methylaniline, being a secondary amine does not.
Solution 2
Aniline and N-methylaniline can be distinguished using the Carbylamine test
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