What is the basic principle behind fractional distillation?


Fractional distillation is a kind of distillation wherein miscible liquids are separated. Repeated distillations and condensations are used in the process, and the mixture is typically separated into component parts.

Fractional distillation is used to separate a mixture of two or more miscible liquids which boil without decomposition and for which the difference in boiling points is less than 30oC.


  • Fractional distillation has a variety of applications.
  • Water is purified using fractional distillation, and acetone and water are separated using fractional distillation.
  • Fractional distillation is used to purify and separate several organic compounds in a variety of industries, including oil refineries and chemical plants.

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