Question

How can we test a urated and usaturated hydrocarbon yhrough bromine?

Answer 1

Answer:

Reaction with bromine: Unsaturated hydrocarbons react rapidly with bromine in a solution of carbon tetrachloride or cyclohexane. ... Since alkanes have only single C—C bonds present, no reaction with bromine is observed; the red color of the reagent would persist when added.

Explanation:

Answer 2

$\huge{Answer}$An unknown sample is treated with a small amount of elemental bromine in an organic solvent, being as dichloromethane or carbon tetrachloride. Presence of unsaturation and/or phenol or aniline in the sample is shown by disappearance of the deep brown coloration of bromine when it has reacted with the unknown sample. The formation of a brominated phenol (i.e. 2,4,6-tribromophenol) or aniline(i.e. 2,4,6-tribromoaniline) in form of a white precipitate indicates that the unknown was a phenol or aniline. The more unsaturated an unknown is, the more bromine it reacts with, and the less coloured the solution will appear.