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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 COg) to COzg)- The three reactions leading to the formation of Fe are: Reaction (i): 3 Fez031) + CO g) - 2 Fej04e) + CO2(9) Reaction (ii): Fe,O4(a) + CO(g) - 3 FeO(e) + CO2(g) Reaction (ii): Fe0(4) + CO(g) - Fe (s) + C02(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) 40 -50 (ii) -100 (i) -150 1000 2000 TIK O All of the three reactions are spontaneous at 500 K. Reactions (i) and (i) are more favorable at high temperatures. O The Keg for Reaction (i) is larger than the Keg for Reaction (ii) at all temperatures. Reaction (iii) is spontaneous at high temperatures.

In the smelting of iron ores, the reduction of iron oxides in a blast furnace is accompanied by the oxidation of COg) to COzg)- The three reactions leading to the formation of Fe are: Reaction (i): 3 Fez031) + CO g) - 2 Fej04e) + CO2(9) Reaction (ii): Fe,O4(a) + CO(g) - 3 FeO(e) + CO2(g) Reaction (ii): Fe0(4) + CO(g) - Fe (s) + C02(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) 40 -50 (ii) -100 (i) -150 1000 2000 TIK O All of the three reactions are spontaneous at 500 K. Reactions (i) and (i) are more favorable at high temperatures. O The Keg for Reaction (i) is larger than the Keg for Reaction (ii) at all temperatures. Reaction (iii) is spontaneous at high temperatures.

Chemistry
Chemistry
9th Edition
ISBN:9781133611097
Author:Steven S. Zumdahl
Publisher:Steven S. Zumdahl
Chapter21: Transition Metals And Coordination Chemistry
Section: Chapter Questions
Problem 65E
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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 COg) to CO2g)- The three reactions leading to the formation of Fe are: Reaction (i): 3 Fe,03e) + CO(g) - 2 Fe,04e) + CO2(9) Reaction (ii): Fe,04(a) + CO(g) - 3 FeO(e) + CO2(g) Reaction (ii): FeO(e) + CO(g) - Fe (s) + CO29) 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) 40 -50 (ii) -100 (i) -150 1000 2000 T/K O All of the three reactions are spontaneous at 500 K. Reactions (i) and (i) are more favorable at high temperatures. O The Keg for Reaction (i) is larger than the Kug for Reaction (ii) at all temperatures. Reaction (ii) is spontaneous 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 COg) to CO2g)- The three reactions leading to the formation of Fe are: Reaction (i): 3 Fe,03e) + CO(g) - 2 Fe,04e) + CO2(9) Reaction (ii): Fe,04(a) + CO(g) - 3 FeO(e) + CO2(g) Reaction (ii): FeO(e) + CO(g) - Fe (s) + CO29) 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) 40 -50 (ii) -100 (i) -150 1000 2000 T/K O All of the three reactions are spontaneous at 500 K. Reactions (i) and (i) are more favorable at high temperatures. O The Keg for Reaction (i) is larger than the Kug for Reaction (ii) at all temperatures. Reaction (ii) is spontaneous at high temperatures.
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