Density and speed of sound for binary mixtures of 1,4-dioxane with propanol and butanol isomers at different temperatures

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• 作者：Amalendu Pal ; Harsh Kumar ; Bhupinder Kumar ; Rekha Gaba
• 关键词：Density ; Speed of sound ; 1 ; 4-Dioxane ; Apparent molar volume ; Molecular interaction
• 刊名：Journal of Molecular Liquids
• 出版年：2013
• 出版时间：November, 2013
• 年：2013
• 卷：187
• 期：Complete
• 页码：278-286
• 全文大小：571 K

文摘

The densities, ¦Ñ and the speeds of sound, u, for binary liquid mixtures of 1,4-dioxane with 1-propanol, 2-propanol, 1-butanol, and 2-butanol have been measured as a function of composition using an Anton-Paar DSA 5000 densimeter at temperatures (293.15, 298.15, 303.15 and 308.15) K and atmospheric pressure. The excess molar volumes, V^E, and excess molar isentropic compressibilities, K_S,m^E, were calculated from the experimental data. The computed quantities were fitted to Redlich-Kister equation to derive the coefficients and estimate the standard error values. Also, apparent molar volume, V_?,i and partial molar volume, , excess partial molar volume, and their limiting values at infinite dilution, , and respectively have been calculated from the experimental density measurements. Excess partial molar isentropic compression, K_S,i^E, of both components and their respective limits at infinite dilution, K_S,i^E,¡Þ,were analytically obtained using Redlich-Kister type equations. The variation of these properties with composition and temperature of the mixtures are discussed in terms of molecular interactions.