Stoichiometry
One kg of saturated steam at 100°C and 1.01325 bar is contained in a rigid walled vessel. It lias a volume of 1.673 m³. It cools to 98°C ; the saturation pressure is 0.943 bar ; one kg of water vapour under these conditions has a volume of 1.789 m³. The amount of water vapour condensed (in kg) is
Component molecules are non-polar and no chemical combination or molecular association between unlike molecules takes place in the formation of the solution
Attractive forces between like and unlike molecules are approximately equal
Sizes of the component molecules are approximately equal