Question

(a) What is fractional distillation ? What is the use of fractionating column in fractional distillation ?
(b) Draw a labelled diagram of the fractional distillation apparatus used for separating a mixture of alcohol and water.

Answer 1

Answer:

Frational distillation is the process of refiening petroleum.Here different frations of petroleum are obtained.

So,the main use of frationating is that the different frations of petroleum are seprerated.

Answer 2

Explanation:

• (a) A process of separation of a liquid mixture of chemical compounds into fractions at different boiling points is called fractional distillation. This is done by means of distillation, i.e. by using a fractional column.
• The important function of fractioning column is to provide micro-distillation (condensation) surfaces so that the distillate fractionate pass through.
• The distillate condenses upon rising on each of the fractional arms, thereby creating a temperature gradient between which each fraction distillate oscillates.

• (b) Diagram: fractional distillation apparatus used for separating a mixture of alcohol and  water.