Question

Bond dissociation enthalpies of hydrogen(g) and nitrogen(g) are 436.0 kJ/mol and 941.8 kJ/mol and enthalpy of formation of NH3(g) is -46kJ/mol .What is the enthalpy of atomisation of NH3? What is the average bond enthalpy of N - H bond?


1171.9 kJ/mol

1170.9 kJ/mol

1168 kJ/mol

1268 kJ/mol

Answer 1

1268 kj/mole
is right answer