物理化学学报 >> 1985, Vol. 1 >> Issue (02): 169-176.doi: 10.3866/PKU.WHXB19850208

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KCl在甲醇-非电解质的混合溶剂中溶解度和溶剂化

杨家振; 梁春馀; 初明晨; 吕吉斌; 万奎   

  1. 辽宁大学化学系
  • 收稿日期:1984-09-04 修回日期:1984-12-26 发布日期:1985-04-15

THE SOLUBILITY AND SOLVATION OF KCI IN MIXED SOLVENTS

Yang Jiazhen; Liang Chunyu; Chu Mingchen; Lu Jibien; Wan Kui   

  1. Department of Chemistry; Liaoning Uniuersity; Senyang
  • Received:1984-09-04 Revised:1984-12-26 Published:1985-04-15

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摘要： 本文测定了5、15、25和35 ℃时KCl在甲醇-苯、甲醇-甲苯、甲醇-环己烷和甲醇-四氯化碳中的溶解度S, 并得到经验公式: logS=a+bT, 其中T为绝对温度。同时计算了KCl由甲醇到甲醇混合溶剂的标准迁移自由能ΔG_(tr)~°-, 并得到它和组成x_(Ne)的经验关系式; ΔG_(tr)~°-=CX_(Ne)。同时指出在本实验范围内,温度的变化不影响单纯溶剂化模型和第二介质常数公式的适用性。

Abstract: This paper reports our measurements of the solubility of KCI in the mixtures of methanol-benzene, -toluene, -cyclohexane, -carbontetraehloride at 278.16, 288.15, 298.15, 308.15 K. These data can be expressed by
log(S_o/S_m)=kx_Ne (1)
and
log(S_o/S_m)=k_φφ_(Ne) (2)
where S_o and S_m are the solubilities of salts in pure methanol and mixed solvent, respectively, x_(Ne) and φ_(Ne) are the mole fraction and volume fraction of nonelec- trolytes in the mixed solvent,respectively, k_φ is called the second medium cons- tant. ...