Integral enthalpy of solution and Pitzer's parameters for manganese and cobalt sulfates

• Autorzy: Przepiera A. , Kalbarczyk A.
• Języki publikacji: EN

Abstrakty

EN

The integral enthalpy of solution of manganese and cobalt sulfates in water as a solvent, have been measured using isoperibol calorimeter. The enthalpy of solution has been measured as a function of molality. Measurements were carried out at three different temperatures. Enthalpy of solution at infinite dilution was estimated by extrapolation of experimental data. The experimental data have been fitted using the Pitzer's ionic interaction model with an ionic strength dependent second virial coefficient. Pitzcr's model has been also used to calculate osmotic coefficient and activity coefficient. These data can be important in processes, in which one uses solution of transition metal sulfates.

Słowa kluczowe

EN

integral enthalpy of solution; transition metals sulfates; activity coefficient; osmotic coefficient; Pitzer's model

PL

entalpia roztworu; siarczan metali przejściowych; współczynnik aktywności; współczynnik osmotyczny; model Pitzera

• Wydawca: Centrum Materiałów Polimerowych i Węglowych PAN
• Czasopismo: Polish Journal of Applied Chemistry
• Rocznik: 2007
• Tom: Vol. 51, nr 1-2
• Strony: 1--10
• Opis fizyczny: Bibliogr. 6 poz.

Twórcy

autor

Przepiera A.

autor

Kalbarczyk A.

• Szczecin University of Technology, Institute of Chemistry and Environmental Protection, Al. Piastów 42, 71-065 Szczecin,

Bibliografia

• [1] J. BEVANOTT and J. BOERIO-GATES, Chemical Thermodynamics: Advanced Applications, Academic Press 2000, 409-427.
• [2]A. PRZEPIERA, Solubility equilibria of salts in electrolyte solutions MeSO4-H2SO4-H2O systems, ed. Wydawnictwo Uczelniane Politechniki Szczecińskiej, Szczecin, 1999 (in polish).
• [3] N. HUBERT and R. SOLIMANDO, Dissolution enthalpy of NaCl in water, Thermochimica Acta, 294, 1997, 157-163.
• [4] A. PRZEPIERA and A. KALBARCZYK, Integral enthalpy of solution, osmotic and activity coefficient of transition metals sulfates, Polish Journal of Applied Chemistry, L, no. 3-4, 2006, 55-63.
• [5] M. GUENDOUZI, Water activity, osmotic activity coefficients of aqueous solutions, J. Chem. Thermodynamics, 35, 2003, 209-220.
• [6] K.S. PITZER, Activity Coefficients in Electrolyte Solutions, 2nd edition, Ed. K.S. Pitzer, CRC Press, Boca Raton, Florida, 1991, 95-99.