Solubility and thermodynamics of solvation of krypton in aqueous-methanol solutions of urea at 101 325 Pa and 278-318 K: I. Effect of H/D isotope substitution

被引:0
|
作者
Abrosimov, V. K. [1 ]
Ivanov, E. V. [1 ]
Lebedeva, E. Yu. [1 ]
机构
[1] Russian Acad Sci, Inst Chem Solut, Ivanovo 153045, Russia
基金
俄罗斯基础研究基金会;
关键词
General Chemistry; Krypton; Isotope Substitution; Water Alcohol; Urea Content;
D O I
10.1134/S1070363206050069
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The solubility of Kr in H2O-CD3OH-CO(NH2)(2) and D2O-CH3OD-CO(ND2)(2) mixtures in the entire range of compositions of the mixed aqueous-methanol solvent at a urea content of up to 1.5 solvomolality units (mole fraction 0.0263) was measured at 101 325 Pa and 278.15-318.15 K (at 10 K step). The standard Sechenov parameters K-S(0) of the solubility of Kr and the thermodynamic parameters of krypton-urea pair interactions were determined. A differentiating effect of the H/D isotope substitution on K-S(0) was revealed: Upon deuteration of groups participating in strong hydrogen bonding, the Sechenov solubility parameter increases, and upon replacement of CH3 by CD3, decreases in the absolute value.
引用
收藏
页码:700 / 704
页数:5
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