Excess heat capacities at T=298.15 K and excess enthalpies at T=293.15 and 298.15 K of aqueous solution of 2-methoxyethanol

被引：0
作者：
K. Tamura
T. Yamasawa
机构：
[1] Osaka City University,Department of Chemistry, Graduate School of Science
来源：
Journal of Thermal Analysis and Calorimetry | 2003年 / 73卷
关键词：
excess enthalpy; aqueous solution of 2-methoxyethanol; excess isobaric heat capacity;
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学科分类号：
摘要：
Excess isobaric heat capacities of mixture (2-methoxyethanol+water) were measured at T=298.15 K and excess enthalpies at T=293.15 and 298.15 K. Excess enthalpies were extremely exothermic, up to -1290 J mol-1 atT=293.15 K and -1240 J mol-1 at T=298.15 K. Excess isobaric heat capacities were positive and very large, approximately 9 J K-1 mol-1 at the maximum. In contrast to the data reported by Page and coworkers, the excess heat capacity data were positive in the entire composition range and there was no change in their signs. Consistently, no crossing was found between the curves of excess enthalpies at T=298.15 and 293.15 K.
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页码：143 / 149
页数：6
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