Excess ultrasonic absorption in H2O-D2O mixture

The two state model of Hall (1948) and new relations for the relaxation time and structural compressibility were used to calculate the ultrasonic absorption in excess of the classical values of H₂OD₂O mixture at 30°C. There is good agreement between the calculated and experimental values of excess absorption. The molar free energy difference and the molar volume change calculated for the open-packed and close-packed states agree well with the values reported by Kor et al. (1972).