Abstract
In this work, the mean activity coefficients of MgCl2 in pure water and (glucose+water) mixture solvent were determined using a galvanic cell without liquid junction potential of type: (Mg2++ISE)|MgCl2 (m), glucose (wt.%), H2O (100wt.%)|AgCl|Ag. The measurements were performed at T=298.15K. Total ionic strengths were from (0.0010 to 6.0000)mol·kg−1. The various (glucose+water) mixed solvents contained (0, 10, 20, 30 and 40)% mass fractions percentage of glucose respectively. The mean activity coefficients measured were correlated with Pitzer ion interaction model and the Pitzer adjustable parameters were determined. Then these parameters were used to calculate the thermodynamics properties for under investigated system. The results showed that Pitzer ion interaction model can satisfactory describe the investigated system. The modified three-characteristic-parameter correlation (TCPC) model was applied to correlate the experimental activity coefficient data for under investigation electrolyte system, too.
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