Solubility and solution thermodynamics of 2,5-thiophenedicarboxylic acid in (water + ethanol) binary solvent mixtures

Yang Yang, Qi Zhang, Cuicui Cao, Limin Cheng, Ying Shi, Wenge Yang, Yonghong Hu

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

In this paper, we focused on solubility and solution thermodynamics of 2,5-thiophenedicarboxylic acid. By gravimetric method, the solubility of 2,5-thiophenedicarboxylic acid was measured in (water + ethanol) binary solvent mixtures from 278.15 K to 333.15 K under atmosphere pressure. The solubility data were fitted using modified Apelblat equation, a variant of the combined nearly ideal binary solvent/Redlich-Kister (CNIBS/R-K) model and Jouyban-Acree model. Computational results showed that the modified Apelblat equation has the lowest MD (mean deviation). In addition, the thermodynamic properties of the solution process, including the Gibbs energy, enthalpy, and entropy were calculated by the van't Hoff analysis.

Original languageEnglish
Pages (from-to)52-57
Number of pages6
JournalThermochimica Acta
Volume592
DOIs
StatePublished - 20 Sep 2014

Keywords

  • 2,5-thiophenedicarboxylic acid
  • Apelblat equation
  • CNIBS/R-K
  • Jouyban-Acree model
  • van't Hoff analysis

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