Using the average bond enthalpies listed (in kJ mol⁻¹)

CHEMISTRY · Subjective · A Level · Chemistry · Energetics · Energetics

Problem

Using the average bond enthalpies listed (in kJ mol⁻¹), compute ΔH\Delta H for the reaction below at 298 K. 2 HCN(g) + 3 H₂(g) → 2 CH₃NH₂(g) H–C 414 C≡N 891 C–N 305 N–H 391 H–H 436 Give your answer in kilojoules per mole of reaction as written.

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