The electrochemical extraction of aluminum from bauxite ore involves
Chemistry · JEE Advanced · NTA Exams — General Principles and Processes of Isolation of Elements
The electrochemical extraction of aluminum from bauxite ore involves
- the reaction of Al2O3 with coke (C) at a temperature > 2500 °C
- the neutralization of aluminate solution by
passing CO2 gas to precipitate hydrated alumina (Al2O3·3H2O) - the dissolution of Al2O3 in hot aqueous NaOH.
- the electrolysis of Al2O3 mixed with Na3AlF6 to give Al and CO2.
Answer
(D) the electrolysis of Al 2 O 3 mixed with Na 3 AlF 6 to give Al and CO 2 .
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