Chemistry / Chem 2225 · Atom · ~20 seconds
Electrolysis: Nonspontaneous Redox Driven by Current
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Electrolysis forces a nonspontaneous redox reaction to proceed by supplying electrical energy from an external source, running the reaction against its own natural direction.
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Passing current through molten NaCl drives the nonspontaneous decomposition of NaCl into sodium metal and chlorine gas.
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Electrolysis does not make a nonspontaneous reaction spontaneous — it overpowers a negative E°cell with external energy.