Given below are two statements: Statement I : Pure Aniline and other arylamines are usually colourless. Statement II : Arylamines get coloured on storage due to atmospheric reduction. Choose the correct answer
Show Hint
Aniline turns brown on storage due to oxidation, not reduction, forming quinonoid structures.
Statement I is incorrect but Statement II is correct
Both Statement I and Statement II are incorrect
Statement I is correct but Statement II is incorrect
Hide Solution
Verified By Collegedunia
The Correct Option isD
Solution and Explanation
Statement I: Pure aniline and other arylamines are indeed colourless liquids. Statement II: Aniline becomes coloured on storage, not due to reduction, but due to oxidation by air and light, forming brown-coloured quinonoid compounds. Hence, Statement II is incorrect.
Amine is a type of compound which is derived from ammonia (NH3). According to Organic chemistry, they are basically classified as the functional groups of the organic nitrogen compounds that contain nitrogen atoms with a lone pair.
Amine - Types
Primary Amines:
It is formed when one hydrogen atom in ammonia is substituted by an alkyl or aromatic group. Amino acids and methyl amine are the best examples that why aromatic amines include aniline.
Secondary Amines:
Amines that have two organic substitutes either alkyl or aryl ones or both and are bound to the nitrogen together with one hydrogen are termed as secondary amines. For Example, Dimethylamine.
Tertiary Amines:
Tertiary Amines are the amines where the nitrogen consists of three organic substitutes. For example, Trimethylamine and EDTA.
