Frost diagrams chlorine

The Frost diagram for chlorine species (see Experiment 19) shows that Cl- is the most stable species of this system in water. Accordingly, Cl2, HCIO, and CIO- each require 2e in order to be converted into Cl and, in this sense, the three will be taken as equivalents in the following equations, assuming that the final product in the three cases is the chloride ion. The free available chlorine (or free chlorine residual) can thus be understood as the sum of the concentrations of Cl2, HCIO, and CIO- ... 

FIGURE 8-29 Frost Diagram for Chlorine Species. The solid line is for acidic solutions and the dashed line is for basic solutions. 

The redox potentials associated with this reaction are provided in the Latimer diagram for chlorine in basic solution (Appendix B.7) the Frost diagram for chlorine is in Figure 8.37. The disproportionation of CI2 to Cl and OCl in basic solntion is predicted by Figure 8.37, because CI2 is above the line between Cr and OCl . The free-energy... 

Fig. 17.14 Potential diagrams for chlorine, bromine and iodine at pH = 0. A Frost-Ebsworth diagram for chlorine (pH=0) is given in Figure 17.15 in problem 17.21 at the end of the chaper.

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