Advantages and disadvantages of the Achard model

Due to its structure, the Achard model is a predictive model. Considering a mixed electrolyte solution (e.g. water-NaCl-KCl), it is possible to calculate the activities of all the species and constituents of the media, because the interaction parameters are from binary water-electrolyte systems. However, it is an aqueous solution model where water must always be included in the constituents of the system. 

There are however limitations that are related to the quality and the quantity of experimental data used for the adjustment of the parameters  

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