Below point 'A' `FeO` can __________

Options

A. be reduced by carbon monoxide only.
B. Be reduced by both carbon monoxide and carbon.
C. be reduced by carbon only
D. not be reduced by both carbon and carbon monoxide

Answer

A

Explanation

(a) Below point A Gibbs free energy change for the formation of `CO_(2)` from `CO Delta_((Co,CO_(2))^(@)` has lower value (more negative value) than Gibbs free energy change for the formation of `FeDeltaG_((Fe,FeO))` Hence, FeO will be reduced by CO only below point A.