Measurement of densities for binary mixtures N,N-dimethylformamide plus water and N,N-dimethylacetamide plus water using Anton Paar DMA 602 densimeter

被引：0
|
作者：
Zhu, LH [1 ]
Wang, LZ [1 ]
Sheng, XC [1 ]
Xu, XH [1 ]
机构：
[1] China Inst Metrol, Coll Life Sci, Hangzhou, Peoples R China
来源：
PROCEEDINGS OF THE SECOND INTERNATIONAL SYMPOSIUM ON INSTRUMENTATION SCIENCE AND TECHNOLOGY, VOL 2 | 2002年
关键词：
excess molar volumes; densimeter; N; N-dimethylformamide; N-dimethylacetamide; water;
D O I：
暂无
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In order to study the molecular interactions in aqueous environments, the densities of binary liquid mixtures N, N-dimethylformamide (DMF) + water and N, N-dimethylacetamide (DMA) + water were measured at 298.15K with an Anton Paar DMA 602 densimeter. The values were converted to excess molar volumes (V-E). The values of V-E were negative for the two binary systems over the entire composition range. And the negative values of V-E for DMA + H2O was larger than those of DMF + H2O. The present results of measurement showed that DMA had stronger molecular interactions with water than DMF.
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收藏
页码：676 / 678
页数：3
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