Activity coefficients of strong electrolytes in multicomponent aqueous solutions
Activity coefficients of strong electrolytes in multicomponent aqueous solutions
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DOI：
10.1002/aic.690180208
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发表时间：
1972-03
期刊：
影响因子：
3.7
通讯作者：
H. Meissner;C. L. Kusik
中科院分区：
文献类型：
--
作者：
H. Meissner;C. L. Kusik
这里称为折合活度系数的量T12与强电解质12的平均活度系数Γ12相关如下：其中Z1和Z2是离子上的电荷数。在含有三个离子1、2和3的水溶液中，例如Na+ClBaCl2和BaCl2的Γ12的值将被计算如下：这里，−°32和Γ°12是所指示的电解质，即本例中的Γ和BaCl2，按混合物的总离子强度计算。术语X3表示分数m3z32/(m1z12+m3z32)，其中m表示所指示离子的摩尔分数。即使在高电解液浓度的情况下，用这个方程预测γ通常也是相当成功的。对于含有四个或更多离子的水溶液，也提出了类似的方程式。
The quantity T12 here called the reduced activity coefficient is related to Γ12 the mean activity coefficient of a strong electrolyte 12 as follows: where z1 and z2 are the charge number on the ions. The value of Γ12 for electrolyte 12 in an aqueous solution containing the three ions 1, 2, and 3, such as Na+ Cl− and Ba++, is to be calculated as follows: Here Γ°32 and Γ°12 are for the indicated electrolytes, namely NaCl and BaCl2 in this example, at the total ionic strength of the mixture. The term X3 represents the fraction m3z32/(m1z12 + m3z32) in which m represents the molality of the indicated ion. Fair success is usually attained with this equation in predicting γ, even at high electrolyte concentrations. Similar equations are proposed for aqueous solutions containing four or more ions.