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Extension of the Dense System Equation of State to Electrolyte Solutions

Parsafar Gholamabbas نويسنده , Panahi Afra نويسنده

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In this work we have applied the Dense System Equation of State (DSEOS) to electrolyte solutions. We have found that this equation ofstate can predict the density ofelectrolyte solutions very accurately. It has been tested for different electrolytes solutions at different temperatures and compositions. A hypothetical binary model has been applied to find the dependencies of parameters of this equation of state on solution temperature and composition. Using such a simple model the heat capacity ofNaCI solution was calculatedfor which the absolute percent deviation is less than 2 %. The DSEOS is tested for the following electrolytes: Na2S04, MgCI2, MgS04, KCI, NaCI, and NaBr. We found that the DSEOS predicts the density of aqueous electrolyte solutions mentioned above accurately so that its percent error in density is less than 0.04.

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