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2012 | 10 | 2 | 332-337
Tytuł artykułu

The solubility of Ca(OH)2 in extremely concentrated NaOH solutions at 25°C

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The solubility of Ca(OH)2 in aqueous NaOH solutions up to 12.50 M at 25°C has been determined. The solubility data obtained for NaOH concentrations lower than 3 M was compared with those published in the literature. The solubility of Ca(OH)2 steadily decreases with the increasing NaOH concentration. The solubility data obtained at a constant ionic strength (I = 1 M Na(Cl,OH)) enabled the determination of the conditional solubility product of Ca(OH)2(s) (lgLCa(OH)2 = − 4.10 ± 0.02). Formation of the hydroxo complex CaOH+(aq) was invoked to describe the variation of [Ca2+]T with [OH−]T. Its conditional stability constant was found to be lgKCaOH+ = 0.97 ± 0.02. The experimental protocol employed was proven to be suitable for accurate solubility determinations in rapidly equilibrating systems comprising of highly concentrated, alkaline solutions and containing analytes in the ppm range. [...]
Wydawca

Czasopismo
Rocznik
Tom
10
Numer
2
Strony
332-337
Opis fizyczny
Daty
wydano
2012-04-01
online
2012-01-29
Twórcy
  • Department of Inorganic and Analytical Chemistry, University of Szeged, Szeged, H-6701, P.O. Box 440, Hungary
autor
  • Department of Inorganic and Analytical Chemistry, University of Szeged, Szeged, H-6701, P.O. Box 440, Hungary
  • Department of Inorganic and Analytical Chemistry, University of Szeged, Szeged, H-6701, P.O. Box 440, Hungary
  • Inspectorate for Environment, Nature Conservation and Water in the Region of Lower Tisza, H-6721, Szeged, Hungary
  • Department of Organic Chemistry, University of Szeged, H-6720, Szeged, Hungary
  • Department of Physical Chemistry and Materials Science, University of Szeged, Szeged, H-6720, Hungary
autor
  • Department of Inorganic and Analytical Chemistry, University of Szeged, Szeged, H-6701, P.O. Box 440, Hungary, sipos@chem.u-szeged.hu
Bibliografia
  • [1] S.P. Rosenberg, J.D. Wilson, A.C. Heath, Light Metals 19 (2001)
  • [2] P. Sipos, G.T. Hefter, P.M. May, Analyst 125, 955 (2000) http://dx.doi.org/10.1039/a910335j[Crossref]
  • [3] J. Duchesne, E.J. Reardon, Cement Concr. Res. 25, 1043 (1995) http://dx.doi.org/10.1016/0008-8846(95)00099-X[Crossref]
  • [4] N. Fratini, Ann. Chim. Appl. 39, 616 (1949)
  • [5] S. Diamond, Il Cemento 74, 149 (1977) (In Italian)
  • [6] T. Yuan, J. Wang, Z. Li, Fluid Phase Equil. 297, 129 (2010) http://dx.doi.org/10.1016/j.fluid.2010.06.012[Crossref]
  • [7] H. Konno, Y. Nanri, M. Kitamura, Powder Technol. 123, 33 (2002) http://dx.doi.org/10.1016/S0032-5910(01)00424-7[Crossref]
  • [8] P. Sipos, G.T. Hefter, P.M. May, Rev. Sci. Inst. 70, 1481 (1999) http://dx.doi.org/10.1063/1.1149610[Crossref]
  • [9] W.J. Mader, L.T. Grady, in A. Weissberger, B.W. Rossiter (Eds.), Physical Methods of Chemistry. Part V: Determination of Thermodynamic and Surface Properties (Wiley, New York, 1971)
  • [10] Q. Huang, O. Chmaissem, J.J. Capponi, C. Chaillout, M. Marezio, J.L. Tholence, A. Santoro, Physica C: Superconductivity 227, 1 (1994) http://dx.doi.org/10.1016/0921-4534(94)90349-2[Crossref]
  • [11] B.C. Nelson, P.C. Uden, G.F. Rockwell, K.M. Gorski, Z.G. Aguilera, J. Chrom. A 771, 285 (1997) http://dx.doi.org/10.1016/S0021-9673(97)00109-X[Crossref]
  • [12] A. Lakatos, K. Schrantz, E.A. Enyedi, A. Dombi, Mennyiségi analitikai gyakorlatok, (Szegedi Egyetemi Kiadó, Szeged, Hungary, 2008) (In Hungarian)
  • [13] P. Sipos, M. Schibeci, G. Peintler, P.M. May, G. Hefter, Dalton Trans. 1858 (2006)
  • [14] C. Christrov, N. Moller, Geochim. Cosmochim. Acta 68, 3717 (2004) http://dx.doi.org/10.1016/j.gca.2004.03.006[Crossref]
  • [15] R.A. Smith, A.E. Martell, Critical Stability Constants (Plenum Press, New York, 1976)
  • [16] C.F. Baes, R.E. Mesmer, The Hydrolysis of Cations (Wiley Interscience, New York, 1976)
  • [17] G. Peintler ZITA, A Comprehensive Program Package for Fitting Parameters of Chemical Reaction Mechanisms, Versions 2.1–5.0 (Department of Physical Chemistry, University of Szeged, Szeged, Hungary, 1989–2001).
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-011-0145-0
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