Question

In steam distillation of toluene, the pressure of toluene in vapour is

(a) equal to pressure of barometer

(b) less than pressure of barometer

(c) equal to vapour pressure of toluene in simple distillation

(d) more than vapour pressure of toluene in simple distillation

Answer 1

The correct option is: (b) less than pressure of barometer

Explanation:

Steam distillation is essentially Co-distillation with water and is carried out when a solid or liquid is insoluble in water and is volatile with steam but the impurities are non-volatile.