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Chemical Properties of Metals

Al2O3 cant be...

Question

$A l_{2} O_{3}$ cant be reduced by carbon to get Al metal. If true enter 1 else 0.

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Solution

Al has greater affinity for $O_{2}$ that carbon has, hence C cant be used to reduce $A l_{2} O_{3}$ to Al. Thermodynamically for this reaction:
$A l_{2} O_{3} + 3 C \to 2 A l + 3 C O$
$Δ G_{f}^{\circ}$ is positive hence, reaction is non-spontaneous.

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