The Haber–Bosch process for the production of ammonia is one of the key industrial processes in developed countries.
N₂(g) + 3 H₂(g) ⇄ 2 NH₃(g)
(a) Calculate Δ_rG° for the reaction at 298 K, 800 K, and 1300 K. Data at 298 K are given in Appendix L. Data for the other temperatures are as follows:

How does the Δ_rG°change with temperature?
(b) Calculate the equilibrium constant for the reaction at 298 K, 800 K, and 1300 K.
(c) At what temperature (298 K, 800 K, or 1300 K) is the mole fraction of NH₃ the greatest?

Data given in Appendix L

Transcribed Image Text:

Temperature A, H° (kJ/mol) 800 K 1300 K -107.4 -112.4 A,S° (J/K . mol) -225.4 -228.0