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Draw labelled diagram of Hall-Heroult el...

Draw labelled diagram of Hall-Heroult electrolytic cell for the extraction of aluminium write anode and cathode reactions.

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`{:("At Cathode :   "Al_("(melt)")^(3+)+3e^(-)rarr Al_((l))),("At Anode :       "C_((s))+2O_("(melt)")^(2-)rarrCO_((g))+2e^(-)),("                        "C_((s))+2O_("(melt)")^(2-)rarrCO_(2(g))+4e^(-)):}`
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