Chemistry / Chem 2150 · Atom · ~20 seconds
Galvanic Cell: Spontaneous Redox Generates Current
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A galvanic cell separates a spontaneous redox reaction's oxidation and reduction half-reactions into two compartments joined by a wire, forcing electrons through as current.
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A zinc-copper galvanic cell drives electrons from zinc, through a wire, to copper, lighting a bulb.
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The same reaction run unseparated still transfers electrons, but with no circuit, no current results.
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- 2153Anode and Cathode by Reaction, Not by Charge
- 2159Salt Bridge Maintains Circuit and Neutrality
- 2162Cell Notation Convention
- 2165Cell Potential Defined
- 2210Battery as a Multi-Cell Galvanic Device
- 2219Corrosion as Unwanted Spontaneous Oxidation
- 2228Twin: Electrolytic Cell as the Forced-Reverse Galvanic Cell