Determination of water activities, osmotic and activity coefficients of the system NH4NO3-LiNO3-H2O at the temperature 298.15 K

被引：16
作者：
Marouani, M [1 ]
El Guendouzi, M [1 ]
机构：
[1] Univ Hassan 2 Mohammedia, Fac Sci, Dept Chim, Chim Phys Lab, Casablanca, Morocco
来源：
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY | 2004年 / 28卷 / 03期
关键词：
D O I：
10.1016/j.calphad.2004.10.002
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The water activities of the mixed aqueous electrolyte {(y) NH4NO3 + (1 - y) LiNO3}(aq) are measured at total molalities from 0.2 mol kg(-1) to about saturation for different ionic-strength fractions y of NH4NO3 with y = 0.20, 0.50, 0.80. The results allow the deduction of osmotic coefficients. The experimental results are compared with the predictions of the Zdanovskii-Stokes-Robinson (ZSR), Robinson and Stokes (RS), Lietzke and Stoughton (LS II), Reilly-Wood-Robinson (RWR) mixing rules and the Pitzer model. From these measurements, the Pitzer mixing ionic parameters are determined and used to predict the solute activity coefficients in the mixture. The excess Gibbs energy is also detennined. (c) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：321 / 327
页数：7
相关论文
共 20 条
[1]   SCALE2000:: reaction-transport software dedicated to thermo-kinetic prediction and quantification of scales -: Applicability to desalination problems [J].
Azaroual, M ;
Kervévan, C ;
Durance, MV ;
Durst, P .
DESALINATION, 2004, 165 (1-3) :409-419
[2]   Study of water activities of aerosols of mixtures of sodium and magnesium salts [J].
Chan, CK ;
Ha, ZY ;
Choi, MY .
ATMOSPHERIC ENVIRONMENT, 2000, 34 (28) :4795-4803
[3]   Thermodynamics of formation of ammonium, sodium and potassium alums and chromium alums [J].
Christov, C .
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY, 2002, 26 (01) :85-94
[4]   Thermodynamic properties of the mixed electrolytes {(y)NH4Cl+(1-y)(NH4)2SO4}(aq) at the temperature 298.15 K [J].
El Guendouzi, M ;
Abdelkbir, E .
JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2004, 49 (02) :186-191
[5]   Thermodynamic properties of the system NH4NO3-KNO3-H2O at 298.15 K [J].
El Guendouzi, M ;
Marouani, M .
FLUID PHASE EQUILIBRIA, 2004, 216 (02) :229-233
[6]   Water activities and osmotic and activity coefficients of aqueous solutions of nitrates at 25° C by the hygrometric method [J].
El Guendouzi, M ;
Marouani, M .
JOURNAL OF SOLUTION CHEMISTRY, 2003, 32 (06) :535-546
[7]  
ELGUENDOUZI M, 2004, CALPHAD COMPUT COUPL, V27, P409
[8]  
GOKCEN NA, 1979, 8372 US DEP INT BUR
[9]   A Simple Empirical Equation for the Prediction of the Activity-Coefficient Value of Each Component in Aqueous Electrolyte Mixtures Containing a Common Ion [J].
Lietzke, M. H. ;
Stoughton, R. W. .
JOURNAL OF SOLUTION CHEMISTRY, 1972, 1 (04) :299-308
[10]   EXTENSION OF A 2-STRUCTURE MODEL FOR ELECTROLYTE SOLUTION TO AQUEOUS MIXED ELECTROLYTE SYSTEMS [J].
LIETZKE, MH ;
STOUGHTON, RW .
JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY, 1975, 37 (12) :2503-2506
12