Ionic strength thermodynamic properties’ plots

Figure 4.3 Plots of transformed thermodynamic properties for the reaction ethanol + nadox = acetaldehyde + nadred as a function of pH at 0.25 M ionic strength and temperatures of 273.15, 298.15, and 313.15 K.

Since the transformed thermodynamic properties of inorganic phosphate are each functions of four variables and we want to see how five transformed properties are affected, it is difficult to describe these dependencies, but Mathematica provides two ways. The first is to make a table, and the second is to make three-dimensional plots at a specified ionic strength. 

The functions of temperature, pH, and ionic strength for the reactions discussed in the preceding section are now calculated. They can be used to calculate these thermodynamic properties for the other 89 reactions, or to make tables or plots. 

Figure 3.11 Cumulative formation constants of monomeric 1) and complexes plotted against their ligand numbers. All the data are for zero ionic strength (/) unless otherwise indicated (see Chap. 4). Reprinted with permission from Techniques of estimating thermodynamic properties for some aqueous complexes of geochemical interest, D. Langmuir. In Chemical modeling in aqueous systems, ed. E. A. Jenne, Am. Chem. Soc. Symp. Ser. 93. Copyright 1979 American Chemical Society.

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