Fuoss conductance-concentration function

An alternative procedure uses the Fuoss conductance-concentration function to relate the measured conductance to the ionic concentrations at equilibrium (8). 

R. M. Fuoss, Conductance-concentration function for the paired ion model, J. Phys. Chem., 1978, 82,... 

Since X depends on the mobility of the ion, it is a function of the ion type and of the solution parameters (solvent, solute concentration, temperature, etc.). At very low solute concentrations, X reaches a steady limiting value, A,0, that is often tabulated for the common ions in water solvent at specific temperatures. A table of A,0 values is given in Table 8.1. The A,0 values from such a table can be used to estimate the conductivity of a completely dissociated salt solution by application in Equation 8.10. For finite salt concentrations, the calculated values are indicative, but not exact. Onsager, Fuoss, and others [2,3] have developed equations by which quite accurate values of A, can be calculated from A,0 values under certain circumstances. 

Molar conductivity variations of ionic salts or aggregates in a low-polarity solvent as a function of salt concentration show a unique pattern, for which a number of explanations have been offered. Fuoss and Kraus [21 were the first to show that the graphical correlation of molar conductivity versus... 

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