Question: Carbon cannot be used as reducing agent to obtain Mg from MgO. Why? (b) How is sodium obtained from molten sodium chloride? Give equation of

Carbon cannot be used as reducing agent to obtain Mg from MgO. Why?
(b) How is sodium obtained from molten sodium chloride? Give equation of the reactions.
(c) How is copper obtained from its sulphide ore? Give equations of the reactions.

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