Answer:
The correct answer is B the total bond energies of the product is greater than the total bond energies of the reactants.
Explanation:
3H2+N2=2NH3
This reaction is an endothermic reaction that means that reaction consume heat energy.
Due the above reaction is endothermic the enthalpy change of the reaction is negative(-ve).
During endothermic reaction the total bond energies of the product is greater than the total bond energies of the reactants.