89.1 Introduction of Chemical Kinetics (4) Reaction Mechanism 1)Br2=2 Br Reaction mechanism/pathway 2)Br+h,=hBr+ h the detailed way by which the reactants 3)H+ Br,= HBr+ br are converted into products, or the series of 4)H+HBr=H,+ Br steps by which a reaction takes place 52 Br= Bi The sum of the elementary reactions and their seriesReaction mechanism/pathway: the detailed way by which the reactants are converted into products, or the series of steps by which a reaction takes place. The sum of the elementary reactions and their series. (4) Reaction Mechanism 1) Br2 = 2 Br 2) Br + H2 = HBr + H 3) H + Br2 = HBr + Br 4) H + HBr = H2 + Br 5) 2 Br = Br2 §9.1 Introduction of Chemical Kinetics