This video lecture from Reaction Kinetics (F.Sc. first year Chemistry) covers the determination of order of reaction using half life method. If the half life periods are known at two different concentrations of reactants, the data can be used to find the order of reaction using a relationship which is derived in the lecture. The relationship between order of reaction and half life is discussed at length. Find more e-learning material and educational video lectures in Urdu at maktab.pk.