LUO Zhilin, LI Jinlong, PENG Changjun, et al. Calculation of thermodynamic properties for 1:1 electrolyte solutions by square-well chain fluid with variable range-based equation of state[J]. CIESC Journal, 2014, (1): 39-46.
LUO Zhilin, LI Jinlong, PENG Changjun, et al. Calculation of thermodynamic properties for 1:1 electrolyte solutions by square-well chain fluid with variable range-based equation of state[J]. CIESC Journal, 2014, (1): 39-46.DOI: 10.3969/j.issn.0438-1157.2014.01.005.
An equation of state (EOS) for square-well chain fluids with variable range was applied to calculate thermodynamic properties of 1:1 aqueous electrolyte solutions. The segment diameter and dispersive energy parameter for 22 ions were fitted by experimental data of the mean ionic activity coefficient and osmotic coefficient of more than 40 aqueous electrolyte solutions
with overall average deviations of 6.03% and 5.83%
respectively. The results showed that the EOS can satisfactorily predict the density of aqueous electrolyte solutions and vapor liquid equilibrium of aqueous electrolyte solutions in wide range of temperature with overall average deviations of 0.22% and 4.69%
respectively. The overall average deviations of the prediction proves the reliability of the model parameters.