Stoichiometry
The ratio of existing moles of vapor per mole of vapor free gas to the moles of vapor that would be present per mole of vapor free gas, if the mixture were saturated at the existing temperature & pressure, is termed as the
Component molecules are non-polar and no chemical combination or molecular association between unlike molecules takes place in the formation of the solution
Sizes of the component molecules are approximately equal
Attractive forces between like and unlike molecules are approximately equal