The analysis of thermodynamic properties of liquids and liquid mixtures play very important role in understanding the nature of molecular interaction occurring in the system. In this paper presents experimental data for density (ρ), ultrasonic velocities (u) and refractive indices (n) of pure ethyl acetate, 1-methanol, 1-ethanol, 1-propanol, 1-butanol, 1-hexanol, 1- octanol and their binary mixtures with ethyl acetate as a common component over the whole composition range at 303.15 K. The molecular refraction (Rm), excess molecular refraction (R_m^E) and excess molar volume (VE) were calculated from the experimental data. Negative values of these excess molar volume and excess molar refraction appear for all analyzed systems. The structure and specific characteristics of different molecules in considered mixtures and determined non ideal behavior allow the insight in to possible type of interactions in the mixture, interstitial accommodation and structural effect. The results are discussed in term of molecular interactions between the components of the binary mixtures.
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