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Partial Molar Volumes of 15-Crown-5 Ether in Mixtures of N,N-Dimethylformamide with Water
Journal of Solution Chemistry ( IF 1.2 ) Pub Date : 2014-02-01 , DOI: 10.1007/s10953-014-0138-7
Magdalena Tyczyńska 1 , Małgorzata Jóźwiak 1
Affiliation  

The density of 15-crown-5 ether (15C5) solutions in the mixtures of N,N-dimethylformamide (DMF) and water (H2O) was measured within the temperature range 293.15–308.15 K using an Anton Paar oscillatory U-tube densimeter. The results were used to calculate the apparent molar volumes (VΦ) of 15C5 in the mixtures of DMF + H2O over the whole concentration range. Using the apparent molar volumes and Redlich and Mayer equation, the standard partial molar volumes of 15-crown-5 were calculated at infinite dilution ($$ V_{\text{m}}^{^\circ } $$Vm∘). The limiting apparent molar expansibilities (α) were also calculated. The data are discussed from the point of view of the effect of concentration changes on interactions in solution.

中文翻译:

N, N-二甲基甲酰胺与水混合物中 15-Crown-5 醚的部分摩尔体积

使用 Anton Paar 振荡 U 型管密度计在 293.15–308.15 K 的温度范围内测量了 N, N-二甲基甲酰胺 (DMF) 和水 (H2O) 混合物中 15-crown-5 醚 (15C5) 溶液的密度。结果用于计算在整个浓度范围内 DMF + H2O 混合物中 15C5 的表观摩尔体积 (VΦ)。使用表观摩尔体积和 Redlich 和 Mayer 方程,在无限稀释下计算 15-crown-5 的标准偏摩尔体积 ($$ V _ {\ text {m}} ^ {^ \ circ} $$ Vm∘) . 还计算了极限表观摩尔膨胀度 (α)。从浓度变化对溶液中相互作用的影响的角度讨论数据。
更新日期:2014-02-01
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