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: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter12: Chemical Equilibrium

Section: Chapter Questions

Problem 84QRT

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