Question

When simple distillation method is used? Write the steps to separate acetone and water mixture by simple distillation.

Answer 1

Simple distillation method is used to separate the mixture of two miscible liquids where difference between their boiling points is greater than 25 ºC.
Acetone and water are miscible liquids with a boiling point difference more than 25 ºC. So, they can be separated by the method of simple distillation.

Steps involved in simple distillation:
(i) Take the mixture in a distillation flask and attach a thermometer to it.
(ii) Assemble the apparatus as shown in the figure.
(iii) Heat the mixture slowly while keeping an eye on the thermometer.
(iv) Since the acetone has lower boiling point, it vaporises first and condenses in the condenser, which is finally collected in the beaker.