水-エタノール溶媒中での塩化カリウムの拡散定数

概要

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In order to examine the characteristics of water-ethanol solvent systems, the diffusion coefficients of potassium chloride have been inverstigated in such systems by the method of Schlieren diagonal cylindrical lense. Measurements were made on solutions ranging in the initial concentration from 0.10 to 1.00 M. For the calculation of the real values on the diffusion coefficients, the theory of Sakurada-Hosono could be much applied to such cases as well as high polymer solution (table3). To the contrary of the diffusion coefficients of KC1 in water solvent system, it became clear that they depended on the concentration of KC1 in water-ethanol solvent systems (fig. 4). Therefore, the coefficients of the concentration dependence of the diffusion constants, k_D, were found to be positive and to be considerably influenced by the solvent systems (fig. 4). By searching for the diffusion constants, ionic equivalent conductivities of potassium ion and chloride ion were calculated (table 4).
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