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OXIDATION-REDUCTION (REDOX) POTENTIAL

Definition

This potential of a solution is a measure of the proportion of oxidized to reduced substances. In practice, the redox potential is measured in respect of a platinum electrode and is called the Eh. If electrons flow from the solution to the electrode, reducing conditions are said to exist in the solution and the potential (measured in volts) existing between the electrode and the solution. Oxidizing conditions are said to exist in the solution when electrons flow from the electrode to the solution and the voltage is given a positive sign.

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