2. Ammonia is produced by the Haber process, in which nitrogen and hydrogen are reacted directly using an iron mesh impregnated with oxides as a catalyst. For the reaction N2(g) + 3H2(g)= 2NH3(g) equilibrium constant (Kp values) as a function of temperature are 300 °С, 4.34 х 10-3 500 °С, 1.45 х 10-5 600 °С, 2.25 х 10-6 (a) Is the reaction exothermic or endothermic? Explain why. (b) Calculate AH° from the data using the van't Hoff equation: (K2 In ΔΗ rxn T2. Is the sign of AH° in your answer consistent with your answer for (a)?

2. Ammonia is produced by the Haber process, in which nitrogen and hydrogen are reacted directly using an iron mesh impregnated with oxides as a catalyst. For the reaction N2(g) + 3H2(g)= 2NH3(g) equilibrium constant (Kp values) as a function of temperature are 300 °С, 4.34 х 10-3 500 °С, 1.45 х 10-5 600 °С, 2.25 х 10-6 (a) Is the reaction exothermic or endothermic? Explain why. (b) Calculate AH° from the data using the van't Hoff equation: (K2 In ΔΗ rxn T2. Is the sign of AH° in your answer consistent with your answer for (a)?

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter12: Chemical Equilibrium

Section: Chapter Questions

Problem 12.118PAE

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