Heat Capacity Characteristics of the Solvation of Ammonium Ions in Mixed Solvent N-Methylpyrrolidone-Water at 298.15 K

被引：0

作者：

Novikov, A. N. ^{[1
]}

Kostyleva, E. I. ^{[1
]}

Solovyov, S. N. ^{[2
]}

机构：

[1] Mendeleev Univ Chem Technol, Novomoskovsk Inst, Novomoskovsk 301665, Russia

[2] Mendeleev Univ Chem Technol, Moscow 125047, Russia

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2025年 / 99卷 / 01期

关键词：

heat capacity; solutions; solvation; N-methylpyrrolidone; water; ammonium ions; standard partial molar heat capacities; PREFERENTIAL SOLVATION; THERMODYNAMIC CHARACTERISTICS; AQUEOUS-SOLUTIONS; METAL-IONS; MIXTURES; ACETONITRILE; PRESSURE; DYNAMICS; VOLUMES; IODIDE;

D O I：

10.1134/S0036024424702480

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Values of standard partial molar heat capacity <(C-pi(0))over bar> are determined along with changes Delta C-solv(p,i)0 in heat capacity during the solvation of ammonium ions in a mixed MP-water solvent at 298.15 K. The value of Delta C-solv(p,i)0 of ammonium ions is presented as the sum of four contributions: electrostatic, cavity formation, structural changes in the solvent, and specific ion-solvent interactions. Values of the contributions are calculated on the basis of experimental data and model representations. The dependences of the obtained values on the composition of the mixture are discussed in connection with the structure of the mixed solvent.

引用

页码：24 / 28

页数：5

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