Distillation is used to separate volatile liquids from nonvolatile contaminants or two volatile liquids with a considerable variation in boiling points.
When the boiling points of two liquids differ, they vapourize at different temperatures.
The vapors condense, and the two liquids are separated and collected.
Distillation, for example, can separate chloroform and aniline with boiling temperatures of , respectively.
Chloroform that is more volatile evaporates first and is collected in the receiver.
The distillation flask contains aniline.
Final answer:
Hence, distillation is used to separate volatile liquids from nonvolatile contaminants or two volatile liquids with a considerable variation in boiling points