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JEE Main202310 Apr 2023Evening ShiftChemistryThermodynamics (C)Actual

Gibbs energy vs T plot for the formation of oxides is given below. For the given diagram, the correct statement is-

Options

  1. AAt 600 ° C , CO cannot reduce FeO
  2. BAt 600 ° C , CO can reduce ZnO
  3. CAt 600 ° C , C can reduce ZnO
  4. DAt 600 ° C , C can reduce FeO

Correct answer

D. At 600 ° C , C can reduce FeO

Step-by-step solution

Ellingham diagrams are a particular graphical form of the principle that the thermodynamic feasibility of a reaction depends on the sign of ΔG , the Gibbs free energy change, which is equal to ΔH   −   TΔS , where ΔH is the enthalpy change and ΔS is the entropy change. Hence, element below in Ellingham diagram can reduce oxide of element above it. C can reduce FeO at 600   º C .

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