Ncert Exercises & Solutions

Consider the following figure

At the temperature corresponding to which of the points FeO will be reduced to Fe by coupling the reaction 2FeO →2Fe + O₂ with all of the following reactions?

(i) C + O₂ →CO₂
(ii) 2C + O₂ → 2CO
(ii) 2CO + O₂ → 2CO₂

a. Point A

b. Point B

c. Point D

d. Point E

Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (b, d)

Below point B and E, FeO will be reduced to Fe by all the three reactions shown above in the question.

∆ G_{(C, {CO}_{2})}^{°}, ∆ G_{(C, CO)}^{°}, ∆ G_{(CO, {CO}_{2})}^{°}

lie below

∆ {fG}_{(Fe, FeO)}^{°}

curve at point B and E. Therefore, FeO will be reduced by all three reactions.

Hence, options (b) and (d) are the correct choices.

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