Hydration numbers of perchloric acid: Estimation method based on the Raoult law

Add time:07/22/2019    Source:sciencedirect.com

The hydration numbers of perchloric acid were calculated using the Raoult law. The initial simplificated model is based on the hypothesis of the free water mole fraction equality to the water activity. A cause-effect relation has been established between the violation of this law and the distortion of the hydration numbers curve at low concentrations. In addition, this model was found unsatisfactory for evaluation of the solute activity coefficients. The more sophisticated model has been proposed for the calculations of hydration numbers, free water mole fraction and solute activity coefficients. Its main feature is the use of the free water activity coefficient. Estimated values of this coefficient differ from the unity in a small degree.

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