Ultrasonic velocities in liquid mixtures

Summary

The paper gives results and graphs of (a) ultrasonic velocities and (b) adiabatic compressibilities in the following four binary liquid mixtures in all of which one component is carbon tetrachloride; the second component being (1) benzene, (2) carbon disulphide, (3) ethyl acetate and (4) tetralin. The variation of adiabatic compressibility of the mixture was found to be not always strictly proportional to concentration. These results are applied to experimental investigations in an earlier paper of the author² where it was observed that the intensity of scattered light in binary liquid mixtures (completely miscible and at temperatures far removed from the critical solution temperature) was not always proportional to concentration. The trend of the curve in light-scattering and compressibility studies is the same, being concave or convex towards the concentration axis in both the cases, or being straight. The agreement is satisfactory.