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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
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Solution
(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.
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