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Excess molar volumes, viscosities, and heat capacities for the mixtures of ethylene glycol plus water from 273.15 K to 353.15 K

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JOURNAL OF CHEMICAL AND ENGINEERING DATA
卷 48, 期 4, 页码 836-840

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AMER CHEMICAL SOC
DOI: 10.1021/je020140j

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Experimental densities, viscosities, and heat capacities at different temperatures were measured over the entire mole fraction range for the binary mixture of ethylene glycol + water. Density values were used in the determination of excess molar volumes, V-E. The excess volumes, V-E, are fitted as a function of the mole fraction to a polynomial. Deltaeta was fitted to the Redlich-Kister equation. The excess volumes are negative over the entire composition at the lower temperatures. They show a U-shaped concentration dependence and decrease in absolute value with increasing temperature. At high temperatures, the excess molar volume shows an S-shaped dependence. Deltaeta values are negative over the entire range of mole fraction and have a very similar trend to that for VE. The heat capacities of mixtures have the maximum values at x(1)=0.0312.

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