Croatica Chemica Acta, Vol. 64 No. 1, 1991.
Izvorni znanstveni članak
Ion-Association Reaction of H+ and Br- in (70, 80, 90 and 95 Mass per cent) 2-Butanol-Water Mixtures
I. Tominić
; Laboratory of Physical Chemistry, Faculty of Technology, University of Split, 58000 Split, Teslina 10, Croatia, Yugoslavia
I. Mekjavić
; Laboratory of Physical Chemistry, Faculty of Technology, University of Split, 58000 Split, Teslina 10, Croatia, Yugoslavia
Sažetak
Molar conductivities of HBr in 70, 80, 90 and 95 mass per cent 2-butan- ol-water mixtures were measured in the temperature range from 288.15 to 308.15 K at 5 K intervals. The experimental values were analyzed by the conductance equations after Fuoss-Hsia and Lee-Wheaton. Values for the limiting molar conductivity (A0), obtained by both equations, agree well, better than the association constants (2£A), while the distance parameters (R) differ considerably. Both equations were used to calculate the association constants at different temperatures under the condition that R=q (q is the Bjerrum critical distance). These values were used to obtain standard thermodynamic quantities for the H+ and Br" ion association reaction. The values obtained were compared with the literature data for terL butanol-water mixtures. The mechanism of H+ ion transfer in the investigated mixtures was also discussed.
Ključne riječi
Hrčak ID:
137366
URI
Datum izdavanja:
30.6.1991.
Posjeta: 594 *