Water activities, osmotic and activity coefficients of the system (NH4)2SO4-K2SO4-H2O at the temperature 298.15 K

被引：8
|
作者：
El Guendouzi, M [1 ]
Azougen, R [1 ]
Mounir, A [1 ]
Benbiyi, A [1 ]
机构：
[1] Univ Hassan II Mohammedia, Chim Phys Lab, Dept Chim, Fac Sci Ben Msik, Casablanca, Morocco
来源：
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY | 2003年 / 27卷 / 04期
关键词：
D O I：
10.1016/j.calphad.2004.02.002
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The mixed aqueous electrolyte system consisting of ammonium and potassium sulfates has been studied using the hygrometric method at the temperature 298.15 K. The water activities are measured at total ionic strength values ranging from 0.60 to 8.25 mol kg(-1) for different ionic strength fractions (y) of (NH4)(2)SO4 with y = 0.20, 0.50 and 0.80. The obtained data allow the deduction of osmotic coefficients. The experimental results are compared with the predictions of the Zdanovskii-Stokes-Robinson (ZSR), Kusik and Meissner (KM), Robinson and Stokes (RS). Lietzke and Stoughton (LS II), Reilly-Wood and Robinson (RWR) and Pitzer models. From these measurements, the new Pitzer mixing ionic parameters are determined and used to predict the solute activity coefficients in the mixture. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：409 / 414
页数：6
相关论文
共 50 条
  • [1] Osmotic and activity coefficients of aqueous (NH4)(2)SO4 as a function of temperature, and aqueous (NH4)2SO(4)-H2SO4 mixtures at 298.15 K and 323.15 K
    Clegg, SL
    Milioto, S
    Palmer, DA
    JOURNAL OF CHEMICAL AND ENGINEERING DATA, 1996, 41 (03): : 455 - 467
  • [2] SOLUBILITY POLYTHERMS OF (NH4)2SO4-K2SO4-H2O AND (NH4)2SO4-KNO3-H2O SYSTEMS
    GALUSHKINA, RA
    BERGMAN, AG
    ZHURNAL NEORGANICHESKOI KHIMII, 1973, 18 (01): : 254 - 258
  • [3] Osmotic Coefficients of the System NH4Cl + (NH4)2SO4 + H2O at 298.15 K and Calculation of Onsager Transport Coefficients
    Mitchell, John P.
    Albright, John G.
    JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2009, 54 (02): : 619 - 626
  • [4] SOLUBILITY ISOTHERM OF ZNSO4- NH4)2SO4-K2SO4-H2O QUATERNARY SYSTEM AT 25 DEGREES
    KYDYRGAN.A
    IMANAKUN.B
    ZHURNAL PRIKLADNOI KHIMII, 1970, 43 (03) : 685 - &
  • [5] Thermodynamic properties of the system NH4NO3+ (NH4)2SO4+ H2O at 298.15 K
    El Guendouzi, M
    Errougui, A
    FLUID PHASE EQUILIBRIA, 2005, 230 (1-2) : 29 - 35
  • [6] The characteristics of the mixed crystals of the K2SO4-(NH4)2SO4-H2O system at 298 K
    Dejewska, B
    Chmarzynski, A
    CRYSTAL RESEARCH AND TECHNOLOGY, 1999, 34 (10) : 1245 - 1249
  • [7] SYSTEM K2SO4-(NH4)2SO4-DMF-H2O AT 20 degree .
    Goncharik, I.I.
    Orlova, V.T.
    Aleksandrovich, Kh.M.
    Lepeshkov, I.N.
    Journal of applied chemistry of the USSR, 1987, 60 (7 pt 1): : 1367 - 1369
  • [8] Isopiestic determination of the osmotic and activity coefficients of K2SO4(aq) at the temperatures 298.15 and 323.15 K, and revision of the thermodynamic properties of the K2SO4+H2O system
    Palmer, DA
    Archer, DG
    Rard, JA
    JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2002, 47 (06): : 1425 - 1431
  • [9] Ternary Mutual Diffusion Coefficients of NH4Cl-(NH4)2SO4-H2O at 298.15 K by Optical Interferometry
    John P. Mitchell
    John G. Albright
    Journal of Solution Chemistry, 2007, 36 : 1457 - 1468
  • [10] Ternary mutual diffusion coefficients of NH4Cl-(NH4)2SO4-H2O at 298.15 k by optical interferometry
    Mitchell, John P.
    Albright, John G.
    JOURNAL OF SOLUTION CHEMISTRY, 2007, 36 (11-12) : 1457 - 1468
12345