Question

At the temperature corresponding to which of the points in figure, FeO will be reduced to Fe by coupling the reaction \[\ce{2FeO -> 2Fe + O2}\] with all of the following reactions?

(a) \[\ce{C + O2 -> CO2}\]

(b) \[\ce{2C + O2 -> 2CO}\]

(c) \[\ce{2CO + O2 -> 2CO2}\]

(i) Point A

(ii) Point B

(iii) Point D

(iv) Point E

Answer 1

(ii) Point B

(iv) Point E

Explanation:

The reduction reaction ranges depend upon the points of corresponding intersections in AG° versus T plots.

At point B and E, \[\ce{FeO}\] will be reduced to \[\ce{Fe}\] because at these points AG° value of all three oxidation reactions is lesser than that of reduction reaction.