Q.

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
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