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Ionic Self-Diffusion in Aqueous Solutions

2 Ionic Self-Diffusion in Aqueous Solutions The inherent movement of ions in the absence of an external field is their self-diffusion, but a directional concentration gradient at finite concentration (a gradient of chemical potentials) causes directional diffusion of ions. The limiting ionic self-diffusion coefficients are generally obtained from the limiting conductivities [Pg.50]

The values of the limiting diffusion coefficient, D of aqueous ions of the order of 10 m s , at 25°C are shown in Table 2.11. The self-diffusion coefficients increase with increasing temperatures and a fivefold increase in aqueous solutions from 0 to 100°C has been noted. This is mainly because the viscosity of the solvent diminishes in this direction (Table 3.7). [Pg.51]




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Aqueous diffusion

Diffusion aqueous solution

Diffusion ionic solutions

Diffusion solutes

Diffusion solutions

Ionic aqueous

Ionic diffusion

Ionic self-diffusivities

Ionic solute

Ionic solutions (

Self-diffusion

Self-diffusion in solutions

Self-diffusivities

Self-diffusivity

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