The standard enthalpy of formation of 3 nh is 46kj mol1. If the enthalpy of formation of 2 h from its atoms is 435 kj mol1 and that of nitrogen is 712 kj mol1 , the approximate average bond enthalpy of nh bond in nh3 is:

The standard enthalpy of formation of 3 nh is 46kj mol1. If the enthal

1.	The standard enthalpy of formation of 3 nh is 46kj mol1. If the enthalpy of formation of 2 h from its atoms is 435 kj mol1 and that of nitrogen is 712 kj mol1 , the approximate average bond enthalpy of nh bond in nh3 is:
Answer» 2(g) 2(g)1 N + 3 H2 2°3(g) g NH ;ΔH = –461 × 71223 × 4362N + 3H (g) (g)Average BOND ENTHALPY of N–H bond = + 352kJ mol.