Using the equations
N₂ (g) + O₂(g) → 2 NO (g) AH° = 180.6 kJ/
mol
N₂ (g) + 3 H₂ (g) → 2 NH3 (g) AH° = -91.8 kJ/
mol
2 H₂ (g) + O₂(g) → 2 H₂O (g) AH° = -483.7
kJ/mol
Determine the molar enthalpy (in kJ/mol) for
the reaction
4 NH3(g) + 5 O₂ (g) → 4 NO (g) + 6 H₂O (g).