Naslov
Ion-Association Reaction of H+ and Br- in (90 and 95 Mass per Cent) 1-Butanol-Water, and (90 and 95 Mass per Cent) 2-Methyl-1-Propanol-Water Mixtures

Autori
Tominić, Ivo ; Mekjavić, Ivica

Izvornik
Croatica Chemica Acta (0011-1643) 64 (1991), 2; 189-197

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

Ključne riječi
hydrobromic acid; 1-butanol-water mixtures; 2-methyl-1-propanol-water mixtures; conductivity; ion-association; thermodynamic quantities

Sažetak
The molar conductivities of HBr in the 90 and 95 mass per cent 2-methyl-1-propanol-water and 1-butanol-water mixtures, respectively, were measured in the temperature range from 288.15 to 308.15 K at 5 K intervals. By means of the conductance equations after Fuoss-Hsia and Lee-Wheaton the limiting molar conductivity (lambda_o), association constant (K_A) and the radius of the ion pair (R) were obtained from these data. The data for R differ considerably, so that K_A and lambda_o were also calculated with the same equations under the condition that R=q (q is the Bjerrum critical distance). The influence of the dielectric constant on K_A and lambda_o was established and discussed and comparison was made with analogous literature data for 2-butanol-water and tert. butanol-water mixtures. From the data for K_A at different temperatures (under the condition R=q) the standard thermodynamic quantities for association reaction of H+ and Br- were determined.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

Napomena
Projekt 2.03.01.00.21.B

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