Journal
JOURNAL OF CHEMICAL THERMODYNAMICS
Volume 35, Issue 11, Pages 1855-1860Publisher
ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jct.2003.07.002
Keywords
room temperature ionic liquid; potentiometry; dissociation constant; FeC13; 1-methyl-3-butylimidazolium chloride
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The equilibrium constants for the dissociation reaction 2FeCl(-) = Fe2Cl7- + Cl- in {1-methyl-3-butylimidazolium chloride + Iron(III) chloride} FeCl3/BMIC where 1-methyl-3-butylimidazolium chlorides is a room temperature ionic liquid, were determined potentiometrically in the temperature range (308.15 to 343.15) K. The dependence of pK(dis), where K-dis = a(Cl-) a(Fe2Cl7-)/a(2)(FeCl4-) on temperature was found to be pK(dis) = 23.07449 + 793.7870(K/T)-0.0349(T/K). (C) 2003 Elsevier Ltd. All rights reserved.
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