Sound absorption reduction in solutions with the addition of has been measured at 25°C and 1 atm, using a 100‐liter titanium spherical resonator. Using the equation Kurtze and Tamm [Acustica 3, 33 (1953)] developed, , our measured results for concentration ratios of , and 6 yields , contrary to Kurtze and Tamm's value, 0.21. Our value of F agrees well with the 0.134 value from theoretical calculations including effects of ionic strength and ion‐pairing of , , and , using dissociation constants of 0.0062, 0.1, and 0.178, respectively, for these salts. Theory also shows that F is not a constant, but a variable depending on and . If the dissociation constants of the unsymmetrical salts are doubled, F = 0.093. F is 0.052 if only ionic strength effects are included, i.e., no unsymmetrical ion‐pairing. This technique therefore can be used to quantitatively study ion‐pairing of unsymmetrical salts. [Work supported by ONR and NSF.]
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November 1980
August 11 2005
Differential sound absorption technique and unsymmetrical ion pairing in solutions
Cheng‐chih Hsu;
Cheng‐chih Hsu
Department of Electrical Engineering and Computer Science, University of California, San Diego, CA 92093
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Frederick H. Fisher
Frederick H. Fisher
Marine Physical Laboratory, Scripps Institution of Oceanography, University of California, San Diego, CA 92093
Department of Electrical Engineering and Computer Science, University of California, San Diego, CA 92093
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J. Acoust. Soc. Am. 68, S107 (1980)
Citation
Cheng‐chih Hsu, Frederick H. Fisher; Differential sound absorption technique and unsymmetrical ion pairing in solutions. J. Acoust. Soc. Am. 1 November 1980; 68 (S1): S107. https://doi.org/10.1121/1.2004527
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