Question

4 points on difference between the distillation and fractional distillation

Answer 1

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Here's is your answer :-

Distillation                      

*Simple distillation is used when the boiling points of chemicals in   a mixture having large differences | (more than 25°C).

*No fractionating columns used as the difference in the boiling point of mixture is large.

*By distillation, we can separate 2 miscible liquids having sufficient difference in their boiling points.

* It is done by using air condenser or a water condenser.

* It is less efficient

* E.g. Process used in separating kerosene and petrol.

* The liquid is vaporized and condensed only once or twice.

Fractional distillation

*Fractional distillation is used when the boiling points of chemicals in a mixture are close to each-other, usually within 77°F (25°C).

*Fractionating columns used  to separate the mixtures.

*It is more efficient.

* E.g. Process used in the separation of Crude Oil into useful fractions

* number of times that the liquid is vaporized and condensed is more than 2 times.

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