A) CO and \[C{{O}_{2}}\] are produced in this process
B) \[A{{l}_{2}}{{O}_{3}}\] is mixed with \[Ca{{F}_{2}}\] which lowers the melting point of the mixture and brings conductivity
C) \[A{{l}^{3+}}\] is reduced at the cathode to form Al
D) \[N{{a}_{3}}AI{{F}_{6}}\] Serves as the electrolyte
Correct Answer: D
Solution :
| [d] |
| (1) In this process, carbon anode is oxidized to CO and \[C{{O}_{2}}\] |
| (2) It is a fact |
| (3) At cathode, \[A{{l}^{3+}}\] from \[A{{l}_{2}}{{O}_{3}}\] is reduced to Al |
| (4) \[A{{l}_{2}}{{O}_{3}}\] is the electrolyte, which is undergoing the redox process. So, \[A{{l}_{2}}{{O}_{3}}\] serves as electrolyte and \[N{{a}_{3}}Al{{F}_{6}}\], although an electrolyte, serves as solvent. |
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