MEDIUMMCQ SINGLEJEE Mains ChemistryInorganic ChemistryMetallurgyExtraction of Aluminium
In the context of the Hall - Heroult process for the extraction of Al, which of the following statements is false?
A.Al³⁺ is reduced at the cathode to form Al
B.Na₃AlF₆ serves as the electrolyte✓ Correct
C.CO and CO₂ are produced in this process
D.Al₂O₃ is mixed with CaF₂ which lowers the
Explanation
In the extraction of aluminium by the Hall-Heroult process, the electrolyte used is 2 3 Al O . So, the 2 3 Al O undergoes a redox reaction. The solvent used in this process is 3 6 Na AlF , though it is an electrolyte.
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