a The Ostwald process for the commercial production of nitric acid involves three steps: 4NH3(g)+ 502(g) → 4NO(g) + 6H20(g) 2NO(g) + O2(g) → 2NO2(g) 3NO2(g) + H2O(1) → 2HNO3(1) + NO(g) Using the following data: Substance and State AH°F (kJ/mol) AG°F (kJ/mol) s° (J K-'mol-l) NH3(g) -46 -17 193 NO(g) 90. 87 211 NO2(g) 34 52 240. HNO3(1) -174 -81 156 O2(g) 205 H,O(1) -286 -237 70. H20(g) -242 -229 189 Calculate AH°, AS°, AG°, and K (at 298 K) for each of the three steps in the Ostwald process. first step second step third step ΔΗ kJ ДН — kJ ΔΗ kJ AS° = J/K AS° = J/K AS° = J/K AG° = kJ AG° = kJ AG° = kJ K = K = K = Calculate the equilibrium constant for the first step at 825°C. Assume that AH° and AS° are temperature-independent. K=

a The Ostwald process for the commercial production of nitric acid involves three steps: 4NH3(g)+ 502(g) → 4NO(g) + 6H20(g) 2NO(g) + O2(g) → 2NO2(g) 3NO2(g) + H2O(1) → 2HNO3(1) + NO(g) Using the following data: Substance and State AH°F (kJ/mol) AG°F (kJ/mol) s° (J K-'mol-l) NH3(g) -46 -17 193 NO(g) 90. 87 211 NO2(g) 34 52 240. HNO3(1) -174 -81 156 O2(g) 205 H,O(1) -286 -237 70. H20(g) -242 -229 189 Calculate AH°, AS°, AG°, and K (at 298 K) for each of the three steps in the Ostwald process. first step second step third step ΔΗ kJ ДН — kJ ΔΗ kJ AS° = J/K AS° = J/K AS° = J/K AG° = kJ AG° = kJ AG° = kJ K = K = K = Calculate the equilibrium constant for the first step at 825°C. Assume that AH° and AS° are temperature-independent. K=

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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