TS EAMCET · Chemistry · General Principles and Processes of Isolation of Metals
Which one of the following is used to produce \(\mathrm{Al}\) by electrolysis?
- A Molten \(\mathrm{Al}_2 \mathrm{O}_3+\mathrm{Na}_3 \mathrm{AlF}_6\) electrolyte, carbon coated steel vessel cathode, graphite anode.
- B \(\mathrm{Al}_2 \mathrm{O}_3+\mathrm{PbF}_2\) electrolyte, steel cathode, graphite anode
- C Molten \(\mathrm{Al}_2 \mathrm{O}_3+\mathrm{Na}_3 \mathrm{AlF}_6\) electrolyte, graphite cathode, steel anode
- D \(\mathrm{Al}_2 \mathrm{O}_3+\mathrm{H}_2 \mathrm{O}\) electrolyte, graphite cathode, steel anode
Answer & Solution
Correct Answer
(A) Molten \(\mathrm{Al}_2 \mathrm{O}_3+\mathrm{Na}_3 \mathrm{AlF}_6\) electrolyte, carbon coated steel vessel cathode, graphite anode.
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Detailed explanation
Molien \(\mathrm{Al} \mathrm{O}_3+\mathrm{Na} \mathrm{AlF}_6\) as elecurolyse, carbon coated steel vessel cathode, graphite anode is used to produce aluminium (Al) by electrolysis. The process is called Hall's process. In this process, purified alumina is mixed with…
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