Studies in H2O + D2O media. Part 1.—Kinetics of tritium exchange between trimethyoxybenzene and aqueous perchloric acid in H2O + D2O mixtures: re-evaluation of the deuterium fractionation factor for the aqueous hydrogen ion

Abstract

The kinetics of the hydrogen exchange reaction between 1,3,5-trimethoxy[2-³H]benzene and aqueous 0.05 M perchloric acid in H₂O + D₂O mixtures have been studied. The results are used to calculate the value for the isotopic fractionation of the hydrogen ion (l). Nine other systems already reported are similarly treated and a probable value for l is given as 0.72 ± 0.01.