How many of the following reagents can be used to distinguish between the above compounds?
(i) Isocyanide test (ii) Hinsberg's test (iii) Mustard oil test
(iv) Azo dye test (v) Lucas test (vi) Sodium metal test

Question

How many of the following reagents can be used to distinguish between the above compounds?

(i) Isocyanide test (ii) Hinsberg's test (iii) Mustard oil test

(iv) Azo dye test (v) Lucas test (vi) Sodium metal test

TestHub · Accepted Answer

Explanation:

Asking about the number of reagents that can be used to distinguish between $1^{o}$ aliphatic amine and $1^{o}$ aromatic amine.

Concept:

Based on azo dye test.

Solution:

Primary $(1^{\circ})$ aromatic amines give azo dye test while primary aliphatic amines do not give azo dye test.

The isocyanide test, Hinsberg's test, and mustard oil test are given by both primary aliphatic amines and primary aromatic amines.

The sodium metal test is also given by both primary aliphatic and aromatic amines due to the presence of acidic hydrogen atoms attached to nitrogen.

The Lucas test, however, is given only by alcohols and not by amines.

Final Answer: 1 (azo dye test)

Chemistry - AMINES Question with Solution | TestHub