The enthalpy of atomisation for the reaction . What is the bond energy of bond?
The reaction presented in the question is
Now,
The mean bond enthalpy of the C-H bond should be used here. For the atomisation of 4 moles of C-H bonds, the value is 1665 kJ/mol-1 So, per mole energy = 1665/4 = 416.2 kJ / mol-1