The standard enthalpy of formation of NH3 is 46.0 kJ mol−1. If the enthalpy of formation of H2 from its atom is −436 kJ mol−1 and that of N2 is −712 kJ mol−1, the average bond enthalpy of N−H bond in NH3 is

The standard enthalpy of formation of NH3 is 46.0 kJ mol−1. If the e

1.	The standard enthalpy of formation of NH3 is 46.0 kJ mol−1. If the enthalpy of formation of H2 from its atom is −436 kJ mol−1 and that of N2 is −712 kJ mol−1, the average bond enthalpy of N−H bond in NH3 is
Answer» The standard enthalpy of formation of $N H_{3}$ is $46.0 k J m o l^{- 1}$ . If the enthalpy of formation of $H_{2}$ from its atom is $- 436 k J m o l^{- 1}$ and that of $N_{2}$ is $- 712 k J m o l^{- 1}$ , the average bond enthalpy of $N - H$ bond in $N H_{3}$ is