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प्रश्न
At temperatures above 1073 K coke can be used to reduce \[\ce{FeO}\] to \[\ce{Fe}\]. How can you justify this reduction with Ellingham diagram?
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उत्तर
As per Ellinghan diagram at temperature greater than 1073 K, ∆G° for the formation \[\ce{FeO}\] is less negative than ∆G° for the formation of carbon monoxide from carbon. THus, above 1073 K, carbon can reduce \[\ce{FeO}\], i.e., ∆rG° for the reaction.
\[\ce{FeO + C ->[1073K] Fe + CO is negative}\].
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