Naslov
Conductometric Study of KBr in 2-Butanol + Water Mixtures

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

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of abstracts / 29th International Conference on Solution Chemistry, Portorož, 2005 / Bešter-Rogač, Marija ; Vlachy, Vojko - Ljubljana : Fakulteta za kemijo in kemijsko tehnologijo Univerze v Ljubljani, 2005

Skup
29th International Conference on Solution Chemistry

Mjesto i datum
Portorož, Slovenija, 21.08.2005. - 25.08.2005

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
association distance; 2-butanol + water mixtures; conductivity; potassium bromide; thermodynamic quantities; Walden product

Sažetak
Molar conductivity of KBr in 2-butanol + water mixtures, with alcohol mass fractions of 70, 80, 90 and 95 %, was determined at five temperatures in the range from 288.15 K to 308.15 K. The limiting molar conductivity (lambda0) and association constant (KA) were calculated by the Lee-Wheaton equation with parameter R set at q (Bjerrum´s critical distance). The Walden product and the activation energy of the ionic movement, as well as the standard thermodynamic quantities for the association reaction, were derived from the temperature-dependent lambda0 and KA, respectively. All quantities were compared with those obtained earlier for LiBr and NaBr in the same mixed solvent. Differences in the behaviour of cations were interpreted in terms of their size, as well as solvent basicity, structure and permittivity.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA