Abstract
New experimental (liquid+liquid) equilibrium data have been determined for aqueous systems containing poly(ethylene glycol) of nominal molar mass 10,000 and magnesium sulphate at T=(295.15, 301.15, 305.15, and 311.15)K. The effect of temperature on the liquid compositions of coexisting phases is discussed. The experimental (liquid+liquid) equilibrium data of the systems were correlated by non-random two-liquid (NRTL) activity coefficient model. The interaction parameters of the NRTL activity coefficient model are obtained and reported. The calculated root mean square deviations (RMSD) showed that NRTL activity coefficient model can be used satisfactorily to correlate the (liquid+liquid) equilibrium data in aqueous solution of the {poly(ethylene glycol)+magnesium sulphate} system.
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