ULTRASONIC VELOCITIES IN CADMIUM AND ZINC HALIDES.

Abstract

Ultrasonic velocities and their variation with concentration at different temperatures, viz., 25° C., 40° C., 50° C. and 60°  C.,have been measured for solutions of cadmium chloride, cadmium bromide, cadmium iodide and zinc iodide. From the values of the velocities, the partial molal compressibilities have been calculated. The effect of associated ions on the partial molal compressibility indicates a deviation from the conclusions based on the Debye-Huckel theory for the three cadmium halides in the concentration range studied. On the other hand solutions of zinciodide are found to obey the theory up to a concentration of 0.5 N.