At 90°c the vapour pressure of l,2·dimethylbenzene is 20kpa and that of 1,3-dimethylbenzene is 18 kpa. w'hat is the composition of the vapour of an equimolar mixture of the two components?

19kPa

Explanation:

the total pressure is given by

The pressure

similarly

for equilibrium process let us consider both have one mole

so

similarly

so

so total pressure=10+9=19 kPa

it takes on an electronical energy