Which of the following reactions occurs in the zone of heat absorption of the blast furnace in the metallurgy of iron?
A
CO2+C→2CO
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B
Fe2O3+3CO→2Fe+3CO2
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C
C+O2→CO2
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D
FeO+SiO2→FeSiO3
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Solution
The correct option is ACO2+C→2CO In the zone of heat absorption, in the middle portion (temperature 1075K−1275K),CO2 rising up is reduced to CO with the absorption of heat: CO2+C→2CO;ΔH=163KJ/mol.
In the zone of fusion, C+O2→CO2 reaction takes place.
In the zone of reduction, Fe2O3+CO→2Fe+3CO2 takes place.