1 Chemical Thermodynamics
Given the bond energies of N ≡ N, H-H and N-H bonds as 945, 436 and 391 kJ mol-1 respectively, the enthalpy of the reaction N2 (g) + 3H2 (g)→2 NH3 (g) is 1) -93 kJ 2) 102 kJ 3) 90 kJ 4) 105 kJ
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