Kinetic equations for exactly solvable models of a geminate reaction in the presence of scavengers

On the basis of two many-particle models of a geminate reaction A + B → Product in the presence of bulk scavengers C for which the closed kinetic equations for the mean concentration of species can be exactly derived the unified form of integro-differential equation of general kinetic theory is obtained. A clear physical interpretation has been done for every term of the equations. For low concentration [C] of scavengers, the kinetic equations are reduced to the so-called quasi-binary ones that in turn are brought into the equivalent regular form (the rate type equations).