Abstract
A relation for the distribution function of clusters in a liquid, earlier proposed by the authors, allows one to find the number of particles in a cluster and its dependence on state parameters and to find the frequencies of IR-spectra of organic liquids. The authors have improved the method of finding the number of particles contained in a cluster. The proposed modification of the cluster theory allows one to estimate the energy of clusters, to reveal features of their structure, and to calculate the basic thermophysical properties of liquids, such as the difference of isobaric and isochoric heat capacities, the dynamic viscosity, and other properties. The authors have determined the cluster component of full absorption of ultrasonic waves, the cluster relaxation time, and the dimer formation energy for liquid noble gases and organic liquids. The comparison of the obtained results with experimental data demonstrates the reasonableness of the proposed model for prediction of thermophysical and acoustic properties of liquids.
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