Chemistry - Metallurgy Question with Solution | TestHub

ChemistryMetallurgyEllingham diagram & Reduction methods, Refining of metalMedium2 minQB

ChemistryMediumsingle choice

Passage / Comprehension

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Choose the CORRECT option of temperature at which carbon reduces FeO to iron and produces CO .

Options:

Answer:

Solution:

To reduce FeO using carbon (producing CO), the $Δ G$ for the reaction $2 C + 2 F e O \to 2 F e + 2 CO$ must be negative. On the graph, this occurs at temperatures where the line for $2 C + O_{2} \to 2 CO$ lies below the line for $2 F e + O_{2} \to 2 F e O$ . Since these lines intersect at point A, the reduction is spontaneous only above the temperature at point A.

Stream:JEESubject:ChemistryTopic:MetallurgySubtopic:Ellingham diagram & Reduction methods, Refining of metal

⏱ 2mℹ️ Source: QB

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