Which of the following is correct regarding following diagram of reduction of Haematite.
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a
Below 1073K, C is better reducing agent
b
Below 1073K, CO is better reducing agent
c
Above 1073K, C is better reducing agent
d
Haematite can't be reduced by C or CO.
answer is B.
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Detailed Solution
Because below 1073 K Gibb's energy of formation of Fe2O3 is - 500 which is more than Gibb's energy of formation of CO2.Thus CO, is more stable below 1073 K. As a result Fe2O3 is reduced by CO.Fe2O3+3CO⟶1073K2Fe+CO2