Ellingham diagrams are plots of ΔGº vs temperature which have applications in metallurgy

2H₂ + O₂ = 2H₂O ΔG(J) = –247500 +55.85 T …….. (I)

2CO + O₂ = 2CO₂ ΔG(J) = –282400 +86.81 T………. (II)

The Ellingham diagrams for the oxidation of H₂(I) and CO (II) are given below.

The two lines intersect (T_E) at 1125 K.

Which of the following is correct ?

I. Δ Gº for reaction (i) is more negative at T < 1125K

II. Δ G° for the reduction of CO is more negative at T < 1125 K

III. H₂ is a better reducing agent at T > 1125 K

IV. H₂ is a better reducing agent at T < 1125 K

(A) I and II 

(B) I and III 

(C) III only 

(D) I and IV