Abstract

Measurements of sound velocity in aqueous solutions of sodium formate, sodium acetate, sodium propionate, sodium iso-valerate, calcium formate, calcium acetate, calcium propionate, lead acetate and zinc sulphate support Eucken’s theory which envisages a decrease in the number of aggregates of water molecules as the temperature rises. The other derived characteristics such as adiabatic compressibility, apparent molal compressibility and apparent molal volume conform to Gucker’s theoretical expressions based on the Debye-Huckel theory in the entire concentration range.

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