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Type: Artigo de periódico
Title: Experimental Study Of The Excess Molar Volume 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 A Temperature Of 298.15 K And Atmospheric Pressure
Author: Checoni R.F.
Abstract: Excess molar volumes (VmE) 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 per kilogram of (water + alkanediol), as well as the excess molar volume of these aqueous mixtures salt-free, both at a temperature of 298.15 K and atmospheric pressure, have been determined as a function of composition using a glass pycnometer (5.0 cm3) with thermometer-in-glass. The VmE are negative for all mixtures over the whole composition range. The influences of the electrolyte and of the hydrophobic and hydrophilic effects on the volumetric behavior are discussed. © 2009 Elsevier Ltd. All rights reserved.
Rights: fechado
Identifier DOI: 10.1016/j.supflu.2009.08.012
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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