[PDF] pitzer equation activity coefficient

What is the Pitzer model of nonideality?

THERMODYNAMIC MODELING Pitzer model The Pitzer model was applied for the treatment of non-ideality and in the case of 1-1 electrolyte the osmotic coefficient ? of the solution and mean activity coefficient ?±of the electrolyte can be written as:

What is the Pitzer model for 1-1 electrolyte?

The Pitzer model was applied for the treatment of non-ideality and in the case of 1-1 electrolyte the osmotic coefficient ? of the solution and mean activity coefficient ?±of the electrolyte can be written as:

Does Pitzer's model predict the isopiestic me-asurements of water activity?

298.15 in this study using the values of Pitzer's model, Table 3, predict exactly the same values determined experimentally by Platford (1975), the isopiestic me- asurements of water activity in recent study by Yang

What is the standard deviation of the Pitzer model?

The standard deviation, ?,was defined as: (47) where NPrepresents the number of experimental points at each temperature. The values of ion-interaction parameters for the thermodynamic models are presented in Table 3. The variation of MX b1for the Pitzer model depends on a1 and bbecause c1 is very small: (48)