Galvanic Cell: Spontaneous Redox Generates Current
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State
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.
Show
A zinc-copper galvanic cell drives electrons from zinc, through a wire, to copper, lighting a bulb.
Watch for
The same reaction run unseparated still transfers electrons, but with no circuit, no current results.
Builds on
Unlocks
- 2153 Anode and Cathode by Reaction, Not by Charge
- 2159 Salt Bridge Maintains Circuit and Neutrality
- 2162 Cell Notation Convention
- 2165 Cell Potential Defined
- 2210 Battery as a Multi-Cell Galvanic Device
- 2219 Corrosion as Unwanted Spontaneous Oxidation
- 2228 Twin: Electrolytic Cell as the Forced-Reverse Galvanic Cell