Preferred Label : encounter-controlled rate;
IUPAC definition : A rate of reaction corresponding to the rate of encounter of the reacting molecular
entities. This is also known as 'diffusion-controlled rate' since rates of encounter
are themselves controlled by diffusion rates (which in turn depend on the viscosity
of the medium and the dimensions of the reactant molecular entities). For a bimolecular
reaction between solutes in water at 25 C an encounter-controlled rate is calculated
to have a second-order rate constant of about 10E10 dm3 mol-1 s-1.;
Origin ID : E02089;
See also
A rate of reaction corresponding to the rate of encounter of the reacting molecular
entities. This is also known as 'diffusion-controlled rate' since rates of encounter
are themselves controlled by diffusion rates (which in turn depend on the viscosity
of the medium and the dimensions of the reactant molecular entities). For a bimolecular
reaction between solutes in water at 25 C an encounter-controlled rate is calculated
to have a second-order rate constant of about 10E10 dm3 mol-1 s-1.
