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Experimental Study of the Excess Molar Enthalpy of Ternary Mixtures Containing Water + (1,2-Propanediol, or 1,3-Propanediol, or 1,2-Butanediol, or 1,3-Butanediol, or 1,4-Butanediol, or 2,3-Butanediol)+Electrolytes at 298.15 K and Atmospheric Pressure

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Abstract

Excess molar enthalpies (H E m ) of ternary mixtures containing water+(1,2-propanediol or 1,3-propanediol or 1,2-butanediol or 1,3-butanediol or 1,4-butanediol or 2,3-butanediol)+(sodium bromide, or ammonium bromide, or tetraethyl ammonium bromide, or 1-n-butyl-3-methylimidazolium bromide at 0.1 mol⋅dm−3) at 298.15 K and atmospheric pressure have been determined as a function of composition using a modified 1455 Parr mixture calorimeter. The H E m values are negative for all mixtures over the whole composition range. The influence of the electrolyte on the hydrophobic and hydrophilic effects as well as on the behavior of H E m is discussed.

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  1. School of Chemical Engineering, State University of Campinas, P.O. Box 6066, 13083-970, Campinas, SP, Brazil

    Ricardo F. Checoni & Artur Z. Francesconi

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  1. Ricardo F. Checoni
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  2. Artur Z. Francesconi
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Correspondence to Ricardo F. Checoni.

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Checoni, R.F., Francesconi, A.Z. Experimental Study of the Excess Molar Enthalpy of Ternary Mixtures Containing Water + (1,2-Propanediol, or 1,3-Propanediol, or 1,2-Butanediol, or 1,3-Butanediol, or 1,4-Butanediol, or 2,3-Butanediol)+Electrolytes at 298.15 K and Atmospheric Pressure. J Solution Chem 38, 1055–1070 (2009). https://doi.org/10.1007/s10953-009-9426-z

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