Thermochemical investigation of the (phosphonic acid plus N,N-dimethylformamide) system at T = (298.15 to 328.15) K

被引：2

作者：

Manin, N. G. ^{[1
]}

Fadeeva, Y. A. ^{[1
]}

Safonova, L. P. ^{[1
]}

机构：

[1] Russian Acad Sci, GA Krestov Inst Solut Chem, 1 Akad Skaya St, Ivanovo 153045, Russia

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2016年 / 98卷

基金：

俄罗斯基础研究基金会;

关键词：

Thermochemistry; Solution enthalpy; Dilution enthalpy; N; N-dimethylformamide; Phosphonic acid; PHYSICAL PROPERTIES; CRYSTAL STRUCTURE; INFRA-RED; TEMPERATURES; SOLVATION; MIXTURES; ALKYL; IONS;

D O I：

10.1016/j.jct.2016.03.001

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

For the first time the solution enthalpies of crystalline phosphonic acid (H3PO3) in N, N-dimethylformamide (DMF) and dilution enthalpies of the acid solutions in DMF (H3PO3 concentrations: x(2) < 0.781 molar fraction or m < 49 mol/kg) in pure DMF have been measured at T = (298.15, 308.15, 318.15, and 328.5) K. The temperature dependence of the heat capacity of crystalline H3PO3 was obtained also for the first time. The standard solution enthalpies of H3PO3 in DMF have been calculated at different temperatures according to two different models considering the phosphonic acid either as a weak electrolyte dissociating by the first stage or as a non-electrolyte able to form dimmers. A number of thermodynamic properties have been evaluated. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：254 / 261

页数：8

共 50 条

[1] Dissociation Constant of Acetic Acid in (N,N-Dimethylformamide plus Water) Mixtures at the Temperature 298.15 K
Fadeeva, Yuliya A.
Safonova, Lyubov P.
JOURNAL OF SOLUTION CHEMISTRY, 2011, 40 (06) : 980 - 988
[2] Thermodynamic investigation of the orthophosphoric acid -: N,N-dimethylformamide system
Safonova, LP
Fadeeva, YA
Shmukler, LE
Kinchin, AN
JOURNAL OF MOLECULAR LIQUIDS, 2005, 121 (01) : 53 - 57
[3] The calorimetric investigation of phosphoric acid-N,N-dimethylformamide system
Fadeeva, JA
Shmukler, LE
Safonova, LP
Kinchin, AN
THERMOCHIMICA ACTA, 2003, 405 (01) : 117 - 122
[4] Excess molar enthalpies of N,N-dimethylformamide with ketones at 298.15 K
Venkatesu, P
Rao, MVP
Prasad, DHL
Kumar, YVLR
THERMOCHIMICA ACTA, 1999, 342 (1-2) : 73 - 78
[5] Effect of properties of the N,N-dimethylformamide plus methanol and N,N-dimethylformamide plus water mixtures on the solution enthalpy of cyclic ethers in these mixtures at 298.15 K
Jozwiak, Malgorzata
Piekarski, Henryk
Binkowska, Aleksandra
Ludzik, Katarzyna
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2016, 126 (03) : 1645 - 1655
[6] The Hammett acidity function H0 of phosphoric acid solutions in N, N-dimethylformamide at 298.15 K
Fadeeva, Yulia A.
Nikolaeva, Al'bina V.
Safonova, Liubov P.
JOURNAL OF MOLECULAR LIQUIDS, 2014, 193 : 1 - 5
[7] The dilution enthalpies of L-prolinol in N,N-dimethylformamide aqueous solutions at T=298.15 K
Fan, Dashuang
Chen, Zhizhong
Shen, Weiguo
JOURNAL OF CHEMICAL THERMODYNAMICS, 2013, 57 : 506 - 509
[8] Thermodynamic properties of N,N-dimethylformamide plus water
Cherif, Emna
Jammazi, Raja
Othman, Tahar
PHYSICS AND CHEMISTRY OF LIQUIDS, 2014, 52 (06) : 751 - 762
[9] Excess molar volumes for binary and ternary mixtures of (N,N-dimethylformamide plus ethanol plus water) at the temperature 298.15K
Bai, TC
Yao, J
Han, SJ
JOURNAL OF CHEMICAL THERMODYNAMICS, 1998, 30 (11) : 1347 - 1361
[10] Excess molar volumes for ternary mixture (N,N-dimethylformamide plus 1-propanol plus water) at the temperature 298.15 K
Bai, TC
Yao, J
Han, SJ
FLUID PHASE EQUILIBRIA, 1998, 152 (02) : 283 - 298

← 1 2 3 4 5 →