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Modification of the velocity of sound in water by solute ions

✍ Scribed by Michael J. Harrison; Angel E. García

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
569 KB
Volume
161
Category
Article
ISSN
0009-2614

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✦ Synopsis

The effect on the velocity of sound in water of a uniform distribution of compensating positive and negative solute ions is investigated in the hydrodynamic approximation. Coulomb interactions between ions are represented by a self-consistent electric field in the water, which is determined by Poisson's equation and the distribution of ions. Three coupled equations of motion for the water molecules, and positive and negative ions, are respectively linearized and combined with Poisson's equation to study the normal modes of the system. A secular equation for the frequencies of traveling waves is solved in the long-wavelength limit to study ionic hydration effects.

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