Non-indifferent electrolytes

Fig. V-16. The -potential as a function of electrolyte concentration /- indifferent electrolytes containing specifically adsorbed counterions and non-indifferent electrolytes causing change of the sign of (p0 potential 2 - non-indifferent electrolytes containing ions bearing the charge of the same sign as that of potential determining ions...

II. Non-indifferent electrolytes are capable of changing the value of the surface potential, (p0. These electrolytes usually contain ions that are capable of entering the crystal lattice of the solid, e.g. by isomorphic substitution of ions forming the solid phase. The following characteristic cases can be outlined. 

Both cases showing the influence of non-indifferent electrolytes on (p0 and L, values are illustrated in Fig. V-17 by the experimental data acquired by H.R. Kruyt et al for silver iodide [20], Since for slightly soluble salt the product of concentrations of ions forming the salt is related to the solubility product, Ksp. one only needs one quantity, e.g. pi (the negative logarithm of the concentration of iodide ions in solution), to describe the equilibrium in the system, i.e. ... 

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