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Question

A mixture of two or more miscible liquids, for which the difference in the boiling points is less than 25K can be separated by the process called______.


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Solution

Fractional distillation:

  • “To separate a mixture of two or more miscible liquids for which the difference in boiling points is less than 25K, the fractional distillation process is used.”
  • Fractional distillation involves the separation of two miscible liquids.
  • For example mixture of ethanol and water can be separated by using fractional distillation.
  • A simple fractionating column consists of a tube packed with glass beads. The beads provide a surface for the vapors to cool and condense repeatedly."
  • The apparatus for fractional distillation is given below:
Fractional distillation Principle Construction Working etc..- Pharmacy Gyan

Hence, a mixture of two or more miscible liquids, for which the difference in the boiling points is less than 25K can be separated by the process called fractional distillation.


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