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Revista Boliviana de Química
On-line version ISSN 0250-5460
Abstract
CANZONIERI, S et al. Effect of temperature on acoustic and volumetric properties of liquid binary mixtures of propanenitrile and butyl acetate, and of liquid binary mixtures of propanenitrile and pentyl acetate. Rev. Bol. Quim [online]. 2018, vol.35, n.3, pp.85-97. ISSN 0250-5460.
Abstract In this paper we present density (p) experimental data and sound velocity (u), for the binary systems: propanenitrile + butyl acétate and propanenitrile + pentyl acétate at atmospheric pressure and in a temperature range of 278, 15 K to 318.15 K every 5 K. The molar volumes, V(x, T), excess molar volumes, VE(x, T), isobaric thermal expansión coefficient, α(x, T), excess isobaric thermal expansión coefficient, αE(x, T), the speeds of sound deviations, Δu(x, T), isentropic compressibility, kS(x, T), and excess isentropic compressibility, kSE(x, T), were determined from experimental information. Every set of results of properties of the excess was fitted to a polynomial equation like the Redlich-Kister equation [1], dependent on molar fraction and temperature, giving place to diversions of the size of the experimental mistake. The studied binary mixture showed negative values of αE, Δu y kSE, in the whole range of composition and at all temperatures. The prediction of the speed of sound was calculated with the models proposed by Nomoto [2,3], Van Deal [4] and Ernst et al [5].
Keywords : Excess molar volume; Speed of sound deviation; Isobaric thermal expansión coefficient; Excess isentropic compressibility; Models for the speed of sound; Propanenitrile; Butyl acétate; Pentyl acétate.