Ion-solvent interactions of some alkali halides in glycerol from density and viscosity data
Ion-solvent interactions of some alkali halides in glycerol from density and viscosity data
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DOI：
10.1021/je9801260
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发表时间：
1998-11-01
期刊：
影响因子：
--
通讯作者：
Champeney, DC
中科院分区：
文献类型：
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作者：
Hammadi, A;Champeney, DC
本文给出了在25 ℃时KCl、NaCl、KBr和KI的甘油溶液的密度和粘度的测量结果。表观体积和偏摩尔体积（V-Phi和V-I）仅由密度数据计算。假设Debye-Huckel极限定律在低浓度下有效，并通过外推法获得无限稀释时的摩尔体积值。通过Jones-Dole方程分析粘度数据。Kaminsky方法，BK+ = BCl-的基础上，开发用于分离的B-系数在水溶液中的甘油。从甘油中离子的结构形成和结构破坏性质的角度讨论了离子的B系数。甘油中的摩尔体积数据与粘度数据的比较表明，在水溶液中，具有最高B系数的盐（NaCl）表现出最小的极限表观摩尔体积V-Phi（无穷大）。最后，在水中的离子-溶剂相互作用的相似性与那些在甘油和溶质的影响，似乎对这两种溶剂进行了讨论。
This paper presents the results of density and viscosity measurements for glycerol solutions of KCl, NaCl, KBr, and KI at 25 degrees C. The apparent and partial molar volumes (V-Phi and V-I) mere calculated from the density data. The Debye-Huckel limiting law was assumed to be valid at low concentrations, and values of the molar volumes at infinite dilution were obtained by extrapolation. The viscosity data were analyzed by means of the Jones-Dole equation. The Kaminsky method, based on BK+ = BCl-, developed for the separation of the B-coefficients in aqueous solutions was used in glycerol. The ionic B-coefficients are discussed in terms of structure-making and structure-breaking properties of ions in glycerol. A comparison of molar volume data with viscosity data in glycerol shows that, as in aqueous solutions, the salt (NaCl) having the highest B-coefficient exhibits the smallest limiting apparent molar volume V-Phi(infinity). Finally, the similarities of ion-solvent interactions in water with those in glycerol and the effects that the solutes seem to have on both solvents are discussed.