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Question
Write the equation for the reaction that occurs at the cathode during the extraction of aluminum by electrolysis.
Solution
At the cathode: Al3+ + 3e- → Al
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Aluminium is extracted from its chief ore bauxite. The ore is first purified and then the metal is extracted from it by electrolytic reduction.
Write an equation for the reaction which takes place at the anode during the extraction of aluminium by the electrolytic process.
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