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Estimate ArxnH (750 K) for the reaction 12 N2 (g) + 3 2 H2 (g) → NH3(g) from the listed value of the standard enthalpy of formation of NH3(g) at 298 K in conjunction with the data on the temperature-dependence of heat capacities give in Table 2B.1. Table 2B.1* Temperature variation of molar heat capacities, Cpm/(JK-¹ mol-¹)=a+bT+c/T² a b/(10-³K-¹) C(s, graphite) CO₂(g) H₂O(1) N₂(g) * More values are given in the Resource section. 16.86 44.22 75.29 28.58 4.77 8.79 0 3.77 c/(10³ K²) -8.54 -8.62 0 -0.50

Estimate ArxnH (750 K) for the reaction 12 N2 (g) + 3 2 H2 (g) → NH3(g) from the listed value of the standard enthalpy of formation of NH3(g) at 298 K in conjunction with the data on the temperature-dependence of heat capacities give in Table 2B.1. Table 2B.1* Temperature variation of molar heat capacities, Cpm/(JK-¹ mol-¹)=a+bT+c/T² a b/(10-³K-¹) C(s, graphite) CO₂(g) H₂O(1) N₂(g) * More values are given in the Resource section. 16.86 44.22 75.29 28.58 4.77 8.79 0 3.77 c/(10³ K²) -8.54 -8.62 0 -0.50

Chemistry
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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Estimate ArxnH° (750 K) for the reaction 1 2 N2 (g) + 3 2 H2 (g) → NH3(g) from the listed value of the standard enthalpy of formation of NH3(g) at 298 K in conjunction with the data on the temperature-dependence of heat capacities give in Table 2B.1. Table 2B.1* Temperature variation of molar heat capacities, Cp.m/(JK-¹ mol-¹)=a+bT+c/T² a 16.86 44.22 75.29 28.58 b/(10-³K-¹) C(s, graphite) CO₂(g) H₂O(1) N₂(g) * More values are given in the Resource section. 4.77 8.79 0 3.77 c/(10³ K²) -8.54 -8.62 0 -0.50
Transcribed Image Text:Estimate ArxnH° (750 K) for the reaction 1 2 N2 (g) + 3 2 H2 (g) → NH3(g) from the listed value of the standard enthalpy of formation of NH3(g) at 298 K in conjunction with the data on the temperature-dependence of heat capacities give in Table 2B.1. Table 2B.1* Temperature variation of molar heat capacities, Cp.m/(JK-¹ mol-¹)=a+bT+c/T² a 16.86 44.22 75.29 28.58 b/(10-³K-¹) C(s, graphite) CO₂(g) H₂O(1) N₂(g) * More values are given in the Resource section. 4.77 8.79 0 3.77 c/(10³ K²) -8.54 -8.62 0 -0.50
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