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Ion association and ultrasonic relaxation in hydrogen-bonding solvents: 1:1 Electrolytes in 2-propanol at 25°C (1972)

Noveske, Terrence ; Stuehr, John ; Fennell Evans, D.

Springer

Journal of solution chemistry 1 (1972), S. 93-109

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ISSN: 1572-8927

Keywords: Ultrasonics ; relaxation ; ion association ; tetraalkylammonium halides ; hydrogen-bonded solvent

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology

Notes: 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.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01028448

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