Prediction and Correlation of Freezing Point Depression of Aqueous Solutions
ABSTRACT THE Clausius-Clapeyron equation was investigated for the correlation of freezing point depression (FPD) of aqueous solutions. On the basis of solvation theory of solution, the solute-solvent interactions were considered for calculating mole fraction of solute and solvent in the solutions. A generalized two-parameter FPD equation was found applicable for correlations of FPD data to a wide range of aqueous solutions including salts, acids, bases, glycerol, alcohol and sugars. For most solutions of pure substances, the errors of the predicted values were less than 2%.