Commentary concerning “measurement and correlation of solubility and solution thermodynamics of 1,3-dimethylurea in different solvents from T = (288.15 to 328.15) K”
2019
Abstract Errors were discovered regarding the published equation coefficients of Zhu and co-workers [J. Chem. Thermodynamics 97 (2016) 9–16] for mathematically describing the solubility behavior of 1,3-dimethylurea in different pure solvents using the Wilson model. Larger differences were found between our back-calculated data and those reported in the authors’ published paper. The expression of Wilson model was corrected and the equation parameters were re-regressed. In addition, the thermodynamic functions of mixing such as change of mixing Gibbs energy, mixing enthalpy and mixing entropy of mixing were re-calculated.
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