At 1000 K, H o R 123 77 kJ mol 1 for the reaction N 2 (g) 3H 2 (g) 2NH 3 (g), with C P,m 3 502R, 3 466 R, and 4 217 R for N 2 (g), H 2 (g), and NH 3 (g), respectively Calculate H o f of NH 3 (g) at 450 K from this information Assume that the heat capacities are independent of temperature ...

For this problem the heat capacities are assumed to be ...

At 1000.K, H o R = 123.77 kJ mol 1 for the reaction N 2 (g) +

Question:

At 1000.K, ΔH^o_R = –123.77 kJ mol^–1 for the reaction N₂(g) + 3H₂(g) → 2NH₃(g), with C_P,m = 3.502R, 3.466 R, and 4.217 R for N₂(g), H₂(g), and NH₃(g), respectively. Calculate ΔH^o_f of NH₃(g) at 450.K from this information. Assume that the heat capacities are independent of temperature.