ESTIMATION OF DISSOCIATION PARAMETERS OF ELECTROLYTES AT HIGH-TEMPERATURES FROM SPECIFIC CONDUCTANCE DATA

A method is proposed for estimating dissociation parameters from high- temperature specific conductance data. The method avoids the need to c alculate the limiting equivalent conductance (lambda(o)), which is obt ained by extrapolating lambda(c) to inifinite dilution, and avoids ext rapolations from high solvent densities (where complete dissociation i s assumed) to low densities at very high temperatures. This technique is considered to be particularly suitable for analyzing conductance da ta from supercritical aqueous solutions, where a state of complete dis sociation is difficult to achieve even at very high pressures (and hen ce, high densities).