Size and Hydration of Inorganic Macroions from Viscosity and Density Measurements
Size and Hydration of Inorganic Macroions from Viscosity and Density Measurements
复制标题
粘度和密度测量中无机大离子的尺寸和水合
DOI：
10.1021/j150557a026
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发表时间：
1957
期刊：
影响因子：
--
通讯作者：
B. West
中科院分区：
文献类型：
--
作者：
T. Kurucsev;A. Sargeson;B. West
讨论粘度。Jones 和 Dole4 表明，稀水溶液中强电解质相对粘度的浓度依赖性遵循方程 j/—1—A Vc 4-Be，其中 i?,= 77/770 是溶液的相对粘度，c 是摩尔/升浓度，A 和 B 是常数，其所讨论系统的值在表 I 中给出。系数 A 表示对剪切阻力的粘度的贡献通过离子气氛。 6 其值取决于离子气氛的半径、离子的电荷和溶液的离子强度。在此，在粘度测量精度范围内，A 0 的唯一系统是水中的六醇。与其他强电解质相比，该系统的 A 值异常高，这可能是由于阳离子表面的高电荷密度造成的。
Discussion Viscosity.—The concentration dependence ofthe relative viscosity of strong electrolytes in dilute aqueous solution has been shown by Jones and Dole4 to obey the equation j/—1—A Vc 4-Be where i?,= 77/770 is the relative viscosity of the solu-tion, c is the concentration in moles/liter, and A and B are constants whose values for the systems under discussion are given in Table I. The coefficient A represents the contribution to the viscosity of the resistance to shear by the ionic atmosphere. 6 Its value depends on the radius of the ionic atmosphere, the charge of the ions and the ionic strength of the solution. Here, the only sys-tem where A 0, within the limits of accuracy of the viscosity measurements, was the hexol in wa-ter. The unusually high value of Afor this sys-tem compared with other strongelectrolytes6 is probably explained by the high charge density on the surface of the cation.