Benzene and toluene can be separated by fractional distillation. These two liquids have very little difference in boiling points and can be separated by this method. The principle behind simple distillation and fractional distillation is the boiling points. The fractional distillation also involves a similar procedure.
Due to very little difference in boiling points, we can separate benzene and toluene by fractional distillation.
- Fractional distillation is a type of distillation that involves the separation of miscible liquids. The process involves repeated distillations and condensations and the mixture is usually separated into component parts.
- The separation occurs when the mixture is heated at a certain temperature where fractions of the mixture start to vaporize. Then the vapours are allowed to condensed and then collected in a separate flask.
- The boiling point of benzene is 80.10C and that of toluene is 110.60C. Hence benzene is first vapourised and its condensed. In this way, the two liquids are separated.