• Gladius Lewis


Consider the case of a metal M in equilibrium with its ions
$$ {M^{Z + }}\; + \;Ze\; \rightleftharpoons \;M $$
The tendency of a metal to transfer its ions into solution is counterbalanced by an electrode potential difference. Thus equilibrium potentials of metals characterise the free energy change of the process of metal ion removal from metal into solution. In the table below are given some values of normal (standard) equilibrium potentials (that is, where the activity of their own ions in solution is unity) at 298 K; these are known as standard potentials.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Further Reading

  1. Evans, U.R., Corrosion and Oxidation of Metals (Edward Arnold, 1960)Google Scholar
  2. Pludek, V.R., Design and Corrosion Control (Macmillan Press, 1977)CrossRefGoogle Scholar
  3. Scully, J.C., Fundamentals of Corrosion, 2nd ed. (Pergamon, 1975)Google Scholar
  4. Shreir, L.L., (ed.) Corrosion, vols I and II (Newnes-Butterworth, 1976)Google Scholar
  5. Tomashov, N.D., Theory of Corrosion and Protection of Metals (Macmillan, 1966)Google Scholar
  6. West, J.M., Electrodeposition and Corrosion Processes (Van Nostrand, 1971)Google Scholar

Copyright information

© Gladius Lewis 1981

Authors and Affiliations

  • Gladius Lewis
    • 1
  1. 1.University of ZimbabweSalisburyUK

Personalised recommendations