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The electrochemical extraction of aluminum from bauxite ore involves (A) the reaction of AlO3 with coke (C) at a temperature > 2500 C. (B)

The electrochemical extraction of aluminum from bauxite ore involves (A) the reaction of AlO3 with coke (C) at a temperature > 2500 C. (B) the neutralization of aluminate solution by passing CO gas to precipitate hydrated alumina (AlO3-3HO). (C) the dissolution of Al2O3 in hot aqueous NaOH. (D) the electrolysis of Al2O3 mixed with Na3AlF6 to give Al and CO2.

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