Abstract
Many fields, including oil recovery, require aqueous electrolyte data under relevant conditions. The heat of dilution of aqueous solutions of ZnCl[sub 2] and the heats of mixing [Delta]H[sub m] of aqueous solutions of CdCl[sub 2], NiCl[sub 2], and ZnCl[sub 2] with NaCl solutions were measured at 25[degrees]C. The heats of mixing were made at constant ionic strengths of 0.5, 1.0, and 3.0 molal. The excess enthalpy equations of Pitzer were then fitted to the resulting heats of dilution and heats of mixing data. The resulting parameters are the temperature derivatives of the activity coefficient mixing parameters in the Pitzer system. 38 refs., 5 tabs.
Published Version
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