By measuring the vapor-liquid equilibrium of ethanol-hexamethylene-NaI and testing the data using the ternary Gibbs-Duhem equation,the experimental results of the vapor-liquid equilibrium with thermodynamics consisten...By measuring the vapor-liquid equilibrium of ethanol-hexamethylene-NaI and testing the data using the ternary Gibbs-Duhem equation,the experimental results of the vapor-liquid equilibrium with thermodynamics consistency are obtained.Applying the Pitzer equation of the activity coefficients of 1-1 type electrolyte to non-aqueous mixed solvents,each parameter of the equation was obtained by the method of least squares.The calculation results show that the activity coefficients of NaI in ethanol-hexamethylene system with constant composition decrease as its concentration increases.This method is adapted to determination of electrolytical activity coefficients in non-aqueous solvents.展开更多
文摘By measuring the vapor-liquid equilibrium of ethanol-hexamethylene-NaI and testing the data using the ternary Gibbs-Duhem equation,the experimental results of the vapor-liquid equilibrium with thermodynamics consistency are obtained.Applying the Pitzer equation of the activity coefficients of 1-1 type electrolyte to non-aqueous mixed solvents,each parameter of the equation was obtained by the method of least squares.The calculation results show that the activity coefficients of NaI in ethanol-hexamethylene system with constant composition decrease as its concentration increases.This method is adapted to determination of electrolytical activity coefficients in non-aqueous solvents.
