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Standard Electrode Potential Eθ and the Electrochemical Series

OCR A-level ChemistryElectrochemistryLesson 6 of 14

A copper rod dipped in a solution of copper ions generates a potential relative to the solution. This potential cannot be measured but can only be compared to the potential of another half cell. The potential difference between the half cell and a standard hydrogen half-cell can be measured.

Diagram

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Key terms in this lesson

half cell
A system consisting of an element in two different oxidation states, in which an equilibrium is set up between the two forms.

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