Abstract
A novel amino acid ionic liquid [C4mim][Gly] (1-butyl-3-methylimidazolium glycine) was prepared by a neutralization method. The molar enthalpies of dilution, ΔDHm(mi→mf), of aqueous [C4mim][Gly] at various molalities were measured at (298.15 ± 0.01) K. The values of the apparent relative molar enthalpy, φL, were calculated by using both the extended Debye−Huckel equation and the Pitzer equation, which were in good agreement within experimental error. In terms of φL, the molar enthalpies of solution of [C4mim][Gly], ΔsHm, at various molalities were estimated. The estimated values of ΔsHm were consistent with the experimental values previously obtained.
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