| 水溶液中四种酰胺与乙醇分子间的异系焓相互作用 |
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| 引用本文： | 郑晓雯.水溶液中四种酰胺与乙醇分子间的异系焓相互作用[J].济宁师范专科学校学报,2014(3):9-13. |
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| 作者姓名： | 郑晓雯 |
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| 作者单位： | 济宁学院化学与化工系、山东省无机化学重点实验室,山东曲阜273155 |
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| 摘 要： | 310.15K时,利用2277热活性检测仪的流动测量系统测定了乙醇分别与甲酰胺、N,N-二甲基甲酰胺、乙酰胺,N,N-二甲基乙酰胺在水溶液中混合过程焓变以及各自的稀释焓,根据McMillan-Mayer理论关联得到了各级焓作用系数.讨论了不同酰胺与乙醇分子的相互作用机制.结果表明,乙醇与不同酰胺分子的hxy均为正值.不同酰胺与乙醇的hxy大小主要取决于酰胺分子结构的差异,酰胺分子中所含-CH3个数越多,其hxy值越大,故N,N-二甲基乙酰胺与乙醇的焓对作用系数hxy最大,并用溶质-溶质相互作用和溶质-溶剂相互作用理论对结果进行解释.
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| 关 键 词： | 酰胺 乙醇 焓对作用系数 |
The Study of the Enthalpic Interactions Between Four Kinds of Acidamides and Ethanol in Aqueous Solutions |
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| ZHENG Xiaowen.The Study of the Enthalpic Interactions Between Four Kinds of Acidamides and Ethanol in Aqueous Solutions[J].Journal of Jining Teachers College,2014(3):9-13. |
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| Authors: | ZHENG Xiaowen |
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| Institution: | ZHENG Xiaowen ( Department of Chemistry and Chemical Engineering, Key Laboratory of Inorganic Chemistry of Shandong Province, Jining University, Qufu 273155, China ) |
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| Abstract: | The enthalpies of mixing of aqueous four kinds of acidamides solutions and ethanol solution have been determined at 310.15K by 2277 flow microcalorimetric system. The data have been analyzed in terms of the McMillan-Mayer theory to obtain the enthalpic pair interaction coefficient （hxy） and compared with them .The results show that hxy values between different acidamides and ethanol denpend on the structures of acidamides. Because of the most -CH3 in N, N-dimethyl acetamide, its hxy values is biggest. The results are discussed in terms of solute-solute and solute-solvent interactions theory. |
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| Keywords: | ethanol acidamides enthalpic interaction coefficient |
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