Sound absorption mechanism of an aqueous solution in nonelectrolyte

The expression on sound absorption and sound dispersion in aqueous solutions of nonelectrolyte has been obtained based on the idea due to hydrophobic interactions. The calculations are shown to be in agreement with the observation on butyl cellosolve (ethylene glycol monobutyl ether) aqueous solutions. It is shown that the relaxation curve is expressible in terms of two relaxation times—the upper relaxation time, corresponding to the usual intermolecular relaxation time hitherto employed, and the lower relaxation time, shortened under the influence of the diffusion of the molecules.

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