Chemical kinetic considerations are applicable to separation processes for quantitatively analyzing components in unresolvable mixtures. Distillation, diffusion, and dialysis were used. Analysis by this approach is simple and appears to be widely applicable to two-component systems.Three-component systems were successfully analyzed using dialysis.Components may be quantitatively determined in mixtures by application of chemical kinetic principles and equations to physical separation processes such as distillation, diffusion, and dialysis. In these cases, separation