THE ELECTRICAL CONDUCTIVITY OF AQUEOUS SOLUTIONS OF HYDROGEN SULPHIDE AND THE STATE OF THE DISSOLVED GAS

Abstract

This paper is the last of three dealing with the equilibria between hydrogen sulphide and water, and is a continuation of a series of researches designed to investigate the equilibria existing in gaseous aqueous systems.Electrical conductivities of aqueous solutions of hydrogen sulphide have been measured between 5° and 60 °C. The results lead to the conclusion that hydrogen sulphide resembles certain other gaseous solutes and forms with water a complex which undergoes electrolytic dissociation. The constant k of the Ostwald dilution law therefore appears to be an apparent, rather than a real, dissociation constant.The complete analysis of the equilibria involved and the evaluation of the constants must depend on accurate measurements at low concentrations, which are not yet completed.