Abstract
In the present study, 13 aqueous solutions are considered to predict osmotic coefficients of chloride and sulfate aqueous electrolyte systems. For this study (in order to predict osmotic coefficients) the Extended UNIQUAC equation was considered, for AClx=1,2: A = Li, H, Na, K, NH4,Cs, Mg, Ca, Ba (aq) and Bj=1,2SO4: B = Li, Na, K, NH4 (aq) systems. Based on the optimized thermodynamic equation, the effect of concentration and ionic strength on the osmotic coefficient of chloride and sulfate solutions is investigated. According to the results, the osmotic coefficients of the studied systems depend on the ionic strength. For the electrolytic system, the temperature in this study is 298.15 K and pressure is 1 bar. Also, the charge number of cation to anion in this study is 2: 1, 1: 2 and 1: 1.
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