Abstract
Standard potentials of the (silver + silver bromide) electrode in 20 (ethylene glycol + water) solvents, covering the whole range of solvent composition, have been determined from electromotive-force measurements of cells of the type:
Pt|
H
2
(g)|
HBr(m)
in solvent &.sfnc;
AgBr|
Ag
at 9 different temperatures from 288.15 to 328.15 K. The molality
m of the acid ranged from 0.004 to 0.1 mol · kg
−1. The temperature variation of the standard e.m.f. was used to calculate the standard thermodynamic functions for the cell reaction, the primary medium effects of various solvents upon HBr, and the standard quantities for the transfer of HBr from water to the solvents, and the results have been discussed.