What is the relationship between enthalpy change and bond dissociation energy?

What is the relationship between enthalpy change and bond dissociation energy?

Step 1: Understand that enthalpy change (ΔH) is the heat energy change during a chemical reaction.
Step 2: Know that bond dissociation energy is the energy required to break a bond between two atoms in a molecule.
Step 3: Identify the bonds in the reactants (the starting materials) and their corresponding bond dissociation energies.
Step 4: Identify the bonds in the products (the substances formed) and their corresponding bond dissociation energies.
Step 5: Calculate the total bond dissociation energy for all the bonds in the reactants.
Step 6: Calculate the total bond dissociation energy for all the bonds in the products.
Step 7: Subtract the total bond dissociation energy of the products from that of the reactants: ΔH = (Total energy of reactants) - (Total energy of products).
Step 8: The result gives you the enthalpy change for the reaction.

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