Calculate the enthalpy change, (in )

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

Problem

Calculate the enthalpy change,

\Delta H

(in

\text{kJ}\,\text{mol}^{-1}

), for the synthesis of ammonia at 298 K using the average bond enthalpies provided. N₂(g) + 3 H₂(g)

\rightarrow

2 NH₃(g) N≡N 945 H–H 436 N–H 391