Question

Gibbs energy vs T plot for the formation of oxides is given below.

For the given diagram, the correct statement is -

• A. At 600°C, CO cannot reduce FeO
• B. At 600°C, C can reduce FeO
• C. At 600°C, C can reduce ZnO
• D. At 600°C, CO can reduce ZnO

Answer 1

The Correct Option is B

Analyzing the given plot and its corresponding reactions.
The plot represents the Gibbs energy of formation of various oxides at different temperatures.
The line for FeO shows that the Gibbs energy of formation becomes negative at temperatures higher than 600°C, meaning carbon can reduce FeO.
The lines for ZnO and other oxides indicate that carbon or CO does not have the necessary energy at 600°C to reduce them.
Thus, the correct statement is that at 600°C, carbon can reduce FeO.