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Excess molar enthalpies of dichloropropane + n-alkane mixtures

Study on the effect of increasing the chain length of the n-alkane and the influence of the chlorine position

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Abstract

We have determined the excess molar enthalpies \( H_{\text{m}}^{\text{E}} \) at 298.15 K and normal atmospheric pressure for the binary mixtures containing dichloropropane and n-alkane [{xCH2ClCHClCH3 + (1−x) C n H2n+2 (n = 6, 8, 10, 12)} and {xCH2ClCH2CH2Cl + (1−x) C n H2n+2 (n = 8, 10)}] using a Calvet microcalorimeter. The \( H_{\text{m}}^{\text{E}} \) values for all the mixtures show endothermic behaviour for the whole composition range. The Redlich–Kister equation was used to correlated the experimental values. The experimental excess molar enthalpies were examined on basis of the DISQUAC group-contribution model and the UNIFAC group-contribution method using the version considered by Larsen et al. The experimental and calculated results are discussed in terms of molecular interactions and the proximity effect.

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Authors and Affiliations

  1. Departamento de Física Aplicada, Campus Universitario, Universidad de Santiago, 15706, Santiago de Compostela, Spain

    M. M. Mato, J. Fernández & M. I. Paz Andrade

  2. Departamento de Física Aplicada, Facultad de Ciencias, Universidad de Vigo, 36200, Vigo, Spain

    M. M. Mato & J. L. Legido

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  1. M. M. Mato
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  2. J. Fernández
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  3. J. L. Legido
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  4. M. I. Paz Andrade
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Correspondence to M. I. Paz Andrade.

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Mato, M.M., Fernández, J., Legido, J.L. et al. Excess molar enthalpies of dichloropropane + n-alkane mixtures. J Therm Anal Calorim 101, 1121–1125 (2010). https://doi.org/10.1007/s10973-010-0732-x

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  • DOI: https://doi.org/10.1007/s10973-010-0732-x

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