KINETIC EQUATIONS FOR LOCAL CONCENTRATIONS OF REACTANTS IN SPATIALLY INHOMOGENEOUS SOLUTIONS

Spatially inhomogeneous dilute solutions of reactants placed in a continual solvent (Waite approach) are examined. Based on the familiar non-Markovian kinetic equations of the Integral Encounter Theory, the Markovian kinetic equations were first obtained that allowed for the force action of reactants on each other due to binary encounters in solution during reactant macroscopic displacement. It has been shown that the value of “collisional integral” of reactants determined by their stochastic motion is small as compared to the “collisional integral” with the solvent molecules in the frame of the binary approach to the description of the solvent evolution. Nevertheless, taking account of the encounters of reactants with each other may turn out to be of primary importance, since it results in new physical effects.

Keywords:
dilute solution, kinetic equation, stochastic motion, Integral Encounter Theory.
УДК 541.127:54-145

KINETIC EQUATIONS FOR LOCAL CONCENTRATIONS OF REACTANTS IN SPATIALLY INHOMOGENEOUS SOLUTIONS