A blast furnace is used to reduce iron oxides to elemental iron. The reducing agent for
Chapter 21, Problem 21.77(choose chapter or problem)
A blast furnace is used to reduce iron oxides to elemental iron. The reducing agent for this reduction process is carbon monoxide. a. Given the following data: Fe2O3 1s2 1 3CO1g2 h 2Fe1s2 1 3CO2 1g2 DH 5 223 kJ 3Fe2O3 1s2 1 CO1g2 h 2Fe3O4 1s2 1 CO2 1g2 DH 5 239 kJ Fe3O4 1s2 1 CO1g2 h 3FeO1s2 1 CO2 1g2 DH 5 18 kJ determine DH8 for the reaction FeO1s2 1 CO1g2 h Fe1s2 1 CO2 1g2 b. The CO2 produced in a blast furnace during the reduction process actually can oxidize iron into FeO. To eliminate this reaction, excess coke is added to convert CO2 into CO by the reaction CO2 1g2 1 C1s2 h 2CO1g2 Using data from Appendix 4, determine DH8 and DS8 for this reaction. Assuming DH8 and DS8 do not depend on temperature, at what temperature is the conversion reaction of CO2 into CO spontaneous at standard conditions?
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