Substituted for Concentration Ratio

Your first inclination may be to set up an electrochemical cell, as taught in your general chemistry text, where one compartment contains a known concentration of your oxidized species and the other your reduced species. The potential difference between the two cells can then be measured and E 0 readily obtained. However, such an electrochemical cell is often not convenient for study. Instead, we will use cyclic voltammetry, a technique that observes redox behavior over a wide potential range. This technique can also be used to obtain kinetic and mechanistic information, giving valuable insight into the solution chemistry taking place during redox processes. 

Integrated Approach to Coordination Chemistry An Inorganic Laboratory Guide. By Rosemary A. Marusak, Kate Doan, and Scott D. Cummings Copyright 2007 John Wiley Sons, Inc. 

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