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首页> 外文期刊>Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems >HYDROPHILIC GROUPS DETERMINE PREFERENTIAL CONFIGURATIONS IN AQUEOUS SOLUTIONS - A CALORIMETRIC STUDY OF MONOCARBOXYLIC ACIDS AND MONOALKYLAMINES AT 298.15 K
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HYDROPHILIC GROUPS DETERMINE PREFERENTIAL CONFIGURATIONS IN AQUEOUS SOLUTIONS - A CALORIMETRIC STUDY OF MONOCARBOXYLIC ACIDS AND MONOALKYLAMINES AT 298.15 K

机译：亲水基团确定水溶液中的优选构型-298.15 K下单羧酸和单烷基酰胺的量热研究

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摘要

Enthalpies of dilution of binary aqueous solutions containing monocarboxylic acids and monoalkylamines have been determined by microcalorimetry at 298.15 K. Pairwise self-interaction coefficients of the virial expansion of the excess enthalpies were evaluated and compared with those obtained for alkan-1-ols. The values of the coefficients are positive and increase differently with increasing number of carbon atoms on the alkyl chain, depending on the nature of the functional groups. For all series, starting with the terms containing five methylene groups, the coefficients tend to attain a constant value. Attempting to explain this behaviour, the attention was focused on the nature of the hydration of the alkyl chain. (C) 1997 Elsevier Science B.V. [References: 27]
机译：已通过微量量热法在298.15 K下确定了包含一元羧酸和一元烷基胺的二元水溶液稀释的焓。评估了过量焓的病毒膨胀的成对自相互作用系数，并将其与链烷烃1-ol进行了比较。系数的值为正，并根据官能团的性质，随着烷基链上碳原子数的增加而不同地增加。对于所有系列，从包含五个亚甲基的术语开始，系数趋于获得恒定值。为了解释这种行为，注意力集中在烷基链的水合性质上。 （C）1997 Elsevier Science B.V. [参考：27]

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