Abstract
Ultrasonic absorption measurements have been carried out in aqueous solutions of Bu4NCl, Bu4NBr, Bu4NI, Me4NCl, and LiCl in 2-propanol over the frequency range 15–250 MHz. A single relaxation frequency was observed for each system. All the data were found to be consistent with a 2-step association mechanism in which the rate-determining step was the diffusion of the ions to form a solventseparated ion pair, followed by rapid desolvation to form the contact ion pair. Measured association rate constants were very nearly those predicted for a diffusion-controlled process.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
M. A. Matesich, J. A. Nadas, and D. F. Evans,J. Phys. Chem. 74, 4568 (1970).
D. F. Evans and P. Gardam,J. Phys. Chem. 73, 158 (1969).
D. F. Evans, J. Thomas, J. A. Nadas, M.-A. Matesich,J. Phys. Chem. 75, 1714 (1971).
G. S. Darbari and S. Petrucci,J. Phys. Chem. 74, 268 (1970).
T. L. Broadwater and D. F. Evans,J. Phys. Chem. 73, 3985 (1969).
R. L. Kay and D. F. Evans,J. Phys. Chem. 70, 2325 (1966).
J. Thomas and D. F. Evans,J. Phys. Chem. 74, 3812 (1970).
D. F. Evans, C. Zawoyski, and R. L. Kay,J. Phys. Chem. 69, 3878 (1965);
R. L. Kay, C. Zawoyski, and D. F. Evans,J. Phys. Chem. 69, 4208 (1965).
L. Jackopin, Ph.D. Thesis, Case Western Reserve University, 1969.
I. G. Mikhailov,Dokl. Nauk SSSR 89, 991 (1953).
R. Parsons,Handbook of Electrochemical Constants (Butterworths, London, 1959).
M. J. Blandamer, D. E. Clark, N. J. Hidden, and M. C. R. Symons,Trans. Faraday Soc. 64, 2683 (1968).
J. Stuehr, T. Noveske, J. Evans, and D. F. Evans, in preparation.
J. Stuehr, E. Yeager, T. Sachs, and F. Hovorka,J. Chem. Phys. 38, 587 (1963).
G. Atkinson, M. J. Tait, and R. Garnsey, inHydrogen Bonded Solvents, A. K. Covington and P. Jones, eds. (Taylen and Frances, Ltd., London, 1968), p. 161.
M. J. Blandamer et al.,J. Phys. Chem. 72, 2268 (1968);
M. J. Blandamer et al.,Trans. Faraday Soc. 64, 3247 (1968).
J. Stuehr, T. Noveske, and D. F. Evans, in preparation.
P. Debye,Trans. Electrochem. Soc. 82, 265 (1942).
M. Eigen,Z. Physik. Chem. (Frankfurt) 1, 176 (1954).
R. Fuoss,J. Am. Chem. Soc. 80, 5059 (1958).
G. Kurtze and K. Tamm,Acustica 3, 33 (1953).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Noveske, T., Stuehr, J. & Fennell Evans, D. Ion association and ultrasonic relaxation in hydrogen-bonding solvents: 1:1 Electrolytes in 2-propanol at 25°C. J Solution Chem 1, 93–109 (1972). https://doi.org/10.1007/BF01028448
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01028448