In the metallurgy of aluminium

Question:

In the metallurgy of aluminium ________________.

(i) Al3+ is oxidised to Al (s).

(ii) graphite anode is oxidised to carbon monoxide and carbon dioxide.

(iii) the oxidation state of oxygen changes in the reaction at the anode.

(iv) the oxidation state of oxygen changes in the overall reaction involved in the process

Solution:

Option (ii) graphite anode is oxidised to carbon monoxide and carbon dioxide is the answer.

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