Due to the reaction process, the average concentration around a chemical entity is less than predicted by the uniform distribution. The desired rate can be derived by correcting kR,mixedAB MathType@MTEF@5@5@+=feaafiart1ev1aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacH8akY=wiFfYdH8Gipec8Eeeu0xXdbba9frFj0=OqFfea0dXdd9vqai=hGuQ8kuc9pgc9s8qqaq=dirpe0xb9q8qiLsFr0=vr0=vr0dc8meaabaqaciaacaGaaeqabaqabeGadaaakeaacqWGRbWAdaqhaaWcbaGaemOuaiLaeiilaWIaeeyBa0MaeeyAaKMaeeiEaGNaeeyzauMaeeizaqgabaGaemyqaeKaemOqaieaaaaa@392E@ by a scaling factor as follows: