Abstract
Viscosity of aqueous cesium chloride (CsCl) solution was measured in the ranges of 0.1-5.0molkg-1 and 0.1-375MPa at 283.2 and 323.2K. The Jones-Dole B coefficient of CsCl increased with increasing pressure and then decreased passing over a maximum as well as previously observed one at 298.2K. The maximum B became more remarkable with decreasing temperature from 323.2K to 283.2K. These phenomena were compared with the dielectric friction theory supposing solvent water as a continuum fluid. Inconsistency of the theory at low pressure suggested an existence of any structure in water. Pressure dependence of B is ascribed to a balance between the water structure and the dielectric friction effect.
