Heats of solution in water of salts of the type R4NBr and R2R′2NBr View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2008-06

AUTHORS

L. H. Blanco, Yina P. Salamanca, E. F. Vargas

ABSTRACT

The tetra-alkyl-ammonium halides are electrolytes that have special characteristics due to the presence of hydrocarbon chains. They have been used asmodel compounds to study hydrophobic interactions due to their fairly large solubility in water and because of the possibility of change in the length and geometry of the alkyl chains. In this work the solution enthalpies of tetra-n-butyl-ammonium bromide, tetra-sec-butyl ammonium bromide, tetra-iso-butyl-ammonium bromide and di-n-butyl-di-sec-butyl ammonium bromide were determined at 298.15 K at concentrations between 0.001 and 0.01 mol kg−1. The experimental method used was isoperibol calorimetry. The results were extrapolated fitting the experimental data by least squares to obtain the solution enthalpies at infinite dilution. The hydrocarbon chains studied were so chosen because the tetra-n-butyl-ammonium ion is considered to be a structure maker for water. The results show that the geometry of the ion and of the hydrocarbon chains play an important role in the behavior properties of the solutions. More... »

PAGES

683-686

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s10973-008-9014-2

DOI

http://dx.doi.org/10.1007/s10973-008-9014-2

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1008269974


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