A mixture of ethanol and water can be separated by:

 

Solution:

Concept: Distillation is used for the separation of components of a mixture containing two miscible liquids that boil without decomposition and have sufficient differences in their boiling points.

To separate a mixture of two or more miscible liquids for which the difference in boiling points is less than 25 K,a  fractional distillation process is used.

The apparatus is similar to that for simple distillation, except that a fractionating column is fitted in between the distillation flask and the condenser.

Hence a mixture of ethanol and water can be separated by fractional distillation.