1.

How will you separate a mixture containing kerosene and petrol (difference in their boiling points is more than 25^(@)C), which are miscible with each other ?

Answer»

Solution :KEROSENE and petrol do not decompose on HEATING. The difference in their boiling points is sufficiently apart. Hence the mixture of kerosene and petrol can be separated by distillation.
Procedure :
Take the mixture of kerosene and petrol in a distillation flask.
Fit it with a thermometer.
Arrange the apparatus as shown in the figure.

HEAT the mixture slowly. KEEP a close watchat the thermometer.
At a certain point, the temperature remains steady.
The boiling point of petrol is lower than that of kerosene.
Petrol vapourises first and is collected in beaker.
Kerosene is left behind in the distillation flask.


Discussion

No Comment Found

Related InterviewSolutions