Manganese potential diagram, aqueous solution

Figure 8 The predominance diagram (Pourbaix diagram) indicating the pH-redox potential interaction for manganese species in aqueous solution. The dotted lines indicate the thermodynamic water stability region. The full lines correspond to 1 mol I concentration of species in the liquid phase, the dashed lines to 10 molconcentration.

Example 2.12 In the Latimer diagram for manganese in acidic medium, (a) find the values of E and Eg (see the table below), (b) draw the Frost diagram, and (c) find which is the most stable species of this system in acidic aqueous solution. The standard potential data are summarized in the table given above. 

Fig. 7.2 Potential diagrams (Latimer diagrams) for manganese in aqueous solution at pH 0 (i.e. [H j = 1 mol dm ), and in aqueous solution at pH 14. For such diagrams, it is essential to specify the pH, and the reason is obvious from comparing the two diagrams.

Fig. 22.12 Potential diagrams for technetium and rhenium in aqueous solution at pH 0 compare with the diagram for manganese in Figure 7.2.

Frost Ebsworth diagram for manganese in aqueous solution with [H ] = 1 moldm . This diagram can be constructed from the corresponding potential diagram in Figure 8.2 as follows. 

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