Data for Mixtures of Aqueous Acids, and Inorganic Salts

The Systems

The sources of the data reproduced here are listed in Table 8 of Clegg and Seinfeld (2006a). Fits of activity coefficient models to the data, and comparisons with model predictions, are also described in that paper.

References: S. L. Clegg and J. H. Seinfeld (2006) J. Phys. Chem. A, 110, 5692-5717.


The values in the tables only indicate whether the data were used by Clegg and Seinfeld (2006a) in the fits of their models. Weightings in each individual fit were usually based upon the uncertainties in the measurements (which are also listed). Thus, a weight of 1.0 indicates that the data point was used, 0.0 that the point was rejected as erroneous, and " - " that it was either not considered or was used for comparison only.

The Data

Follow the links below to the tables of experimental data. Notes at the end of each table define the tabulated quantities, and identify the sources of the measurements. The mixtures contain the following acids: oxalic, malonic, succinic, glutaric, malic, maleic, and methylsuccinic. The inorganic salts are (NH4)2SO4, NaCl and NH4NO3 .
  1. Malic + maleic acids   (water activities)
  2. Malonic + glutaric acids   (water activities)
  3. Pure acids and eutonic mixtures   (water activities, solubilities)
  4. Quinary acid mixture   (water activities, solubilities)
  5. Quinary mixture + oxalic acid   (water activities, solubilities)
  6. Quinary mixture + succinic acid   (water activities, solubilities)
  7. Quinary mixture + (NH4)2SO4   (water activities, solubilities)
  8. Quinary mixture + NaCl   (water activities, solubilities)
  9. Quinary mixture + NH4NO3   (water activities, solubilities)