Final answer:
To calculate the enthalpy change using bond enthalpy data, we determine the energy needed to break bonds in the reactants and the energy released from forming new bonds in the products. The total energy to break bonds minus the total energy from bond formation yields the enthalpy change. This method provides an approximation that can be compared to experimental values.
Step-by-step explanation:
Calculating Enthalpy Change Using Bond Enthalpies
To calculate the enthalpy change (ΔH) for a chemical reaction using bond enthalpy data, we must account for the energy needed to break bonds in the reactants and the energy released when new bonds form in the products. The enthalpy change is the sum of the energies required to break all bonds in the reactants (endothermic process) minus the sum of the bond enthalpies of the bonds formed in the products (exothermic process).
Step 1: Calculate the total bond dissociation energy for all bonds broken in the reactants.
Step 2: Calculate the total bond formation energy for all new bonds formed in the products.
Step 3: Subtract the total bond formation energy from the total bond dissociation energy to find the enthalpy change.
Using the bond enthalpies provided, if the question gives us the balanced chemical reaction, we would apply this method to find the enthalpy change. Without the actual chemical reaction, we cannot perform the calculation. It's important to note that the calculation gives us an approximation which can be compared with experimental values, such as standard enthalpies of formation, illustrating the significance of mean bond enthalpies in such estimations.