Stoichiometry
Assuming applicability of ideal gas law, the pure component volume of the vapor in a saturated gas can be calculated from theoretical relationship. The volumetric composition of a vapor saturated gas is independent of the

Total pressure
Nature of the liquid
Nature of the gas
Temperature of the liquid

ANSWER DOWNLOAD EXAMIANS APP

Stoichiometry
According to Raoult's law, "The vapor pressure exerted by component in a solution is proportional to the mole fraction of that component." Raoult's law is not applicable under the following assumption/condition.

No component is concentrated at the surface of the solution
The component molecules are non polar and are of almost equal size
The attractive forces between like and unlike molecules are almost equal
In the formation of solution, chemical combination/molecular association between unlike molecules takes place

ANSWER DOWNLOAD EXAMIANS APP