Question

Pls help one chemistry question :/

Answer 1

The heat of reaction is 180 kJ/mol hence the reaction is endothermic.

What is bond energy?

Bond energy is the energy that is required to form a bond and must be supplied in order to break the bond. In the question, we are told that the energy of the reactants is 860 kJ/mol and the bond energy of the products is 680 kJ/mol.

Heat of reaction = Bond energy of reactants - Bond energy of products

= 860 kJ/mol - 680 kJ/mol = 180 kJ/mol hence the reaction is endothermic.

Learn ore about endothermic reaction:brainly.com/question/4345448