物理化学学报 >> 1994, Vol. 10 >> Issue (10): 903-908.doi: 10.3866/PKU.WHXB19941008

研究论文 上一篇    下一篇

溴化钠在正丙醇-水混合溶剂中溶解热和溶剂化热

张雅明, 沃罗布也夫AF, 索洛玛季娜NA, 莫洛科娃LF   

  1. 南京化工学院化学工程系，南京 210009|俄罗斯化工大学普通及无机化学教研室，莫斯科，俄罗斯 12580
  • 收稿日期:1993-07-07 修回日期:1993-12-01 发布日期:1994-10-15
  • 通讯作者: 张雅明

Enthalpies of Solution and Solvation of NaBr in Aqueous Mixtures of n-propanol

Zhang Ya-Ming, Woloubief A F, Suolamatina N A, Moluokuowa L F   

  1. Department of Chemical Engineering,Nanjing Institute of Chemical Technology,Nanjing 210009|Russian University of Chemical Technology,Moscow,Russian 125820
  • Received:1993-07-07 Revised:1993-12-01 Published:1994-10-15
  • Contact: Zhang Ya-Ming

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摘要：

用高精度等温外壳式量热计测量了298.15K下NaBr在不同组成正丙醇水混合溶剂中溶解热. 根据测量结果及以前作者对NdCl_3，BaCl_2；NaCl，Nal，NaF／n-C_3H_7OH-H_2O体系溶解热的研究结果，计算了298.15K下，正丙醇水混合溶剂中，上述盐的标准溶解热和NaF，NaCl，NaBr和NaI的溶剂化热．讨论了电解质溶解热和溶剂化热与离子特性、混合溶剂的组成和结构的关系．

关键词: 正丙醇, 溴化钠, 电解质, 溶解热, 溶剂化热

Abstract:

Enthalpies of solution of NaBr in aqueous mixtures of n-propanol has been measures over various ranges of compositions at 298.15 K, using high-sensitive calorimeter with isothermal shell. On the bases of the results obtained and our former work for the systems NdCl3, BaCl2, NaCl, NaF, and NaI/n-propanol-water, standred enthalpies of solution of afoementioned salts and enthalpies of solvation of sodium halide in aqueous mixtures of n-propanol were calculated. The dependence of enthapies of sulution and solvation of the electrolytes on the nature of ion, composition and structure of the mixed solvents was discussed.

Key words: n-propanol, Sodium bromide, Electrolyte, Enthalpies of solution, Enthalpies of solvation