Chemistry
State the electrode reaction at the respective electrodes during extraction of Al from Al2O3.
Electrolysis
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Answer
Reaction:
Al2O3 ⇌ 2Al3+ + 3O2-
Reaction at cathode:
2Al3+ + 6e- ⟶ 2Al
Reaction at anode:
3O2- – 6e- ⟶ 3[O]
3[O] + 3[O] ⟶ 3O2
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