Electrochemistry is a branch of chemistry that studies chemical reactions which take place in a solution at the interface of an electron conductor? (a metal or a semiconductor) and an ionic conductor? (the electrolyte), and which involve electron transfer between the electrode and the electrolyte or species in solution.

If a chemical reaction is driven by an external applied voltage, as in electrolysis, or if a voltage is created by a chemical reaction as in a battery, it is an electrochemical reaction. In contrast, chemical reactions where electrons are transferred between molecules are called oxidation? / reduction? (redox) reactions. In general, electrochemistry deals with situations where oxidation? and reduction? reactions are separated in space or time, connected by an external electric circuit to understand each process.

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Page last modified on Sunday 13 of March, 2011 10:02:21 MDT

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