This video lecture from Chemical Equilibrium (F.Sc. Chemistry Book 1) covers the concept of heat as an important component of reaction and how temperature changes affect the exothermic and endothermic reactions, the concept of solubility under the light of Le Chatelier’s principle and the effect of catalyst on reaction. 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.