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ChemistryMetallurgyEllingham diagram & Reduction methods, Refining of metalHard2 minQB

ChemistryHardmultiple choice

At which points in Fig. 6.1 can 2FeO → 2Fe + O₂ be coupled to all three oxidations: (a) C + O₂ → CO₂, (b) 2C + O₂ → 2CO, and (c) 2CO + O₂ → 2CO₂?

Ellingham diagram Fig. 6.1 upper band

Ellingham diagram Fig. 6.1 lower band

Options:(select one or more)

Answer:

B, D

Solution:

At B and E, all three oxidation curves lie below FeO, so all three couplings favour reduction. At the distinct point D (option C), the CO/CO₂ curve meets FeO and that coupling is at equilibrium.

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

⏱ 2mℹ️ Source: QB

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