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Answer the following questions related to NH3. N₂(g) + 3 H₂(g) ⇒ 2 NH3(g) AH298 (a) The reaction of N₂ (g) and H₂(g) to form NH3(g) is represented above. The reaction has been studied in order to maximize the yield of NH3(g). (i) Calculate the value of AG, in kJ/molran, at 298 K. (ii) Calculate the value of the equilibrium constant, K₂, at 298 K. B I X² X₂ Ω ||| –92.2 kJ/molran; AS298 -198.8 J/(molan · K) G 0 / 10000 Word Limit

Bond N - H H - H N = N Average Bond Enthalpy (kJ/mol) 391 436 ?

(c) Although the reaction is thermodynamically favorable at 298 K, it does not occur to an observable extent at this temperature. Explain how the N = N bond enthalpy affects the rate of the reaction. B I X² X₂ C Ω :3 M 0 / 10000 Word Limit (d) The reaction is usually carried out at a very high temperature in the presence of a catalyst. Explain why the reaction is thermodynamically unfavorable at very high temperatures. Justify your answer in terms of AH, AS, and their effect on AG. B I X² X₂ ✓ Ω :3 0 / 10000 Word Limit AI (), 9II (,) -9 NIII (,) ||| |||