Naslov
Conductometric Study of Cesium Bromide in 2-Butanol + Water Mixtures

Autori
Sokol, Vesna ; Tomaš, Renato ; Tominić, Ivo

Izvornik
Polish Journal of Chemistry (0137-5083) 82 (2008), 8; 1585-1596

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
cesium bromide; 2-butanol + water mixtures; association to ion-pairs; thermodynamic quantities

Sažetak
Molar conductivities of dilute solutions of cesium bromide in binary mixtures of 2-butanol and water were measured in the temperature range from 288.15 to 308.15 K at 5 K intervals. The limiting molar conductivity (lambda_o) and the ion-pair formation constant (K_A) were determined by the Lee-Wheaton conductivity equation. Thermodynamic quantities, Gibbs energy (deltaG^o), enthalpy (deltaH^o) and entropy (deltaS^o) for the ion-association reaction were derived from the temperature dependence of K_A. The activation energy of the ionic movement was derived from the temperature dependence of lambda_o. The obtained thermodynamic quantities, together with Walden product, were interpreted in terms of the ionic size as well as solvent basicity, structure and permittivity.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA