This video lecture from Chemical Equilibrium (F.Sc. Chemistry Book 1) covers the effect of change in the pressure and volume of the system and the conditions on which the reaction will respond to these changes, the quantitative effect of volume by developing the equilibrium constant expressions for some reactions. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.