Question

Why Al metal cannot be obtained by the reduction of Al2O3 with coke? Explain.

Answer 1

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• Aluminium or Al forms ionic bond which is strong.
• It is much stronger than Coke.
• Aluminium has much stronger affinity than coke.
• Coke does not even form an ionic bond.
• Now, we know reduction reaction is a reaction where a stronger elementreduces the stronger one to make it pure.
• Here, we want to reduce aluminium from aluminium oxide.
• But, Coke which is is going to act as a reducing agent, is less stronger than aluminium.
• Hence, aluminium cannot be obtained by reduction with the help of coke from aluminium oxide.

$\rule{200}4$