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Thermodynamic studies of Hydrobromic acid in acetonewater mixtures (10, 30 and 50 wt-%) from electromotive force measurements

✍ Scribed by I. Mekjavić; I. Tominić

Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
481 KB
Volume
22
Category
Article
ISSN
0013-4686

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✦ Synopsis

The en$of the cell: Pd, H&)/HBr(m), x wt-y0 acetone-water mixture/AgBr,Ag was measured with x = 10, 30 and 50 at temperatures 15, 25 and 35°C in the molality range for HBr from 0.003 to 0.1 mol kg-l. From these data the standard potentials for AglAgBr electrode are obtained, and used in calculations of: (a) the standard thermodynamic quantities for the cell reaction and the reaction of HBT formation, (b) the mean activity coefficients of HBr, (c) the primary medium effect, and (d) the standard thermodynamic quantities for transfer of HBr from water to the acetone-water mixed solvents. On the basis of the values obtained under (d), the spontaneity of transfer the process for HBr is discussed, the aciLbase properties of mixed solvents and their structure.

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