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In the smelting of iron ores, the reduction of iron oxides in a blast furnace is accompanied by the oxidation of CO(o) to Co20). The three reactions leading to the formation of Fe are: Reaction (i): 3 Fe,03(s) + CO(a) → 2 FegO4(s) + CO2(9) Reaction (ii): Fe304(s) + CO(a) -3 FeO(s) + CO2(G) Reaction (iii): FeO(s) + CO(a) - Fe (s) + CO2(a) The graph below shows the variation of the Gibbs energy change with temperature for each of these reactions. Which one of the following statements is INCORRECT?

In the smelting of iron ores, the reduction of iron oxides in a blast furnace is accompanied by the oxidation of CO(o) to Co20). The three reactions leading to the formation of Fe are: Reaction (i): 3 Fe,03(s) + CO(a) → 2 FegO4(s) + CO2(9) Reaction (ii): Fe304(s) + CO(a) -3 FeO(s) + CO2(G) Reaction (iii): FeO(s) + CO(a) - Fe (s) + CO2(a) The graph below shows the variation of the Gibbs energy change with temperature for each of these reactions. Which one of the following statements is INCORRECT?

General Chemistry - Standalone book (MindTap Course List)
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter19: Electrochemistry
Section: Chapter Questions
Problem 19.104QP
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In the smelting of iron ores, the reduction of iron oxides in a blast furnace is accompanied by the oxidation of CO(g) to CO2(g). The three reactions leading to the formation of Fe are: Reaction (i): 3 Fe,03(s) + CO(g) → 2 Fe304(s) + CO2(9) Reaction (ii): Fe3O4(s) + CO(g) → 3 FeO(s) + CO2(9) Reaction (iii): FeO(s) + CO(g) → Fe (s) + CO2(g) The graph below shows the variation of the Gibbs energy change with temperature for each of these reactions. Which one of the following statements is INCORRECT? 50 (iii) (ii) -50 -100 (i) -150 1000 2000 T/K O Reaction (iii) is spontaneous at high temperatures. OAll of the three re ons are spontaneous at 500 K. O The Keg for Reaction (i) is larger than the Keg for Reaction (ii) at all temperatures. Reactions (i) and (ii) are more favorable at high temperatures.
Transcribed Image Text:In the smelting of iron ores, the reduction of iron oxides in a blast furnace is accompanied by the oxidation of CO(g) to CO2(g). The three reactions leading to the formation of Fe are: Reaction (i): 3 Fe,03(s) + CO(g) → 2 Fe304(s) + CO2(9) Reaction (ii): Fe3O4(s) + CO(g) → 3 FeO(s) + CO2(9) Reaction (iii): FeO(s) + CO(g) → Fe (s) + CO2(g) The graph below shows the variation of the Gibbs energy change with temperature for each of these reactions. Which one of the following statements is INCORRECT? 50 (iii) (ii) -50 -100 (i) -150 1000 2000 T/K O Reaction (iii) is spontaneous at high temperatures. OAll of the three re ons are spontaneous at 500 K. O The Keg for Reaction (i) is larger than the Keg for Reaction (ii) at all temperatures. Reactions (i) and (ii) are more favorable at high temperatures.
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