Interfacial tension in immiscible mixtures of alkali halides.
The interfacial tension of the liquid-phase interface in seven immiscible reciprocal ternary mixtures of lithium fluoride with the following alkali halides: CsCl, KBr, RbBr, CsBr, KI, RbI, and CsI was measured using the cylinder weighing method over a wide temperature range. It was shown that for all mixtures the interfacial tension gradually decreases with growing temperature. The interfacial tension of the reciprocal ternary mixtures at a given temperature increases both with the alkali cation radius (K(+) < Rb(+) < Cs(+)) and with the radius of the halogen anion (Cl(-) < Br(-) < I(-)).
Lockett
Vera
V
Institute of High-Temperature Electrochemistry, Russian Academy of Sciences, 22, S. Kovalevskaya St., 620219 Ekaterinburg, Russian Federation. vera.lockett@unisa.edu.au
Rukavishnikova
Irina V
IV
Stepanov
Victor P
VP
Tkachev
Nikolai K
NK