Electrochemical determination of standard thermal diffusion characteristics for chlorides of hydrogen and potassium in water-ethanol solutions

摘要

Initial and steady-state temperature coefficients of the voltage generated by thermogalvanic cells comprising silver chloride and quinhydrone electrodes in the systems HCl-H2O-C2H5OH and KCI-H2O-CH5OH are determined. Standard thermal diffusion Soret coefficients, the entropy of thermal diffusion transport of electrolytes, and the entropy of mobile ions H+, K+, and Cl- are calculated for 298 K. The effect the nature of ions and the solvent composition exert on the obtained thermal diffusion transport characteristics is considered in terms of the De Bethune theory.