Abstract
The measurements of the ultrasonic absorption coefficient in aqueous solutions of sodium acetate, reported previously, have been extended. The results indicate a value of the absorption coefficient below that for pure water at frequencies above 20 mc. Measurements have also been made of the sound velocity and kinematic viscosity of the solution, and the classical absorption coefficient computed. These values for the solution are slightly higher than the corresponding values for water. It appears that the presence of the solute in some way disrupts the structural relaxation which is hypothesized to account for excess absorption in water. Similar measurements are being made in potassium acetate solutions.
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