Box 14-3 Latimer Diagrams How to Find for a New Half-Reaction

A Latimer diagram displays standard reduction potentials E°, connecting various oxidation states of an element.11 For example, in acid solution, the following standard reduction potentials are observed  

As an example to understand what the Latimer diagram means, the 

The standard free-energy change, AG°, for a reaction is given by 

When two reactions are added to give a third reaction, the sum of the individual A G° values must equal the overall value of A G°. 

To apply free energy to our problem, we write two reactions whose sum is the desired reaction  

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