When the sum of reactant bond dissociation energies is greater than the sum of product bond dissociation energies, the overall heat of the reaction will be… Group of answer choicesendothermicexothermic

The heat of a reaction is determined by the difference between the energy used to break bonds in the reactants and the energy released when new bonds form in the products.

Step 1: Calculate the total energy required to break the bonds in the reactants. This is the sum of the bond dissociation energies of the reactants.

Step 2: Calculate the total energy released when the bonds in the products are formed. This is the sum of the bond dissociation energies of the products.

Step 3: Subtract the energy released (Step 2) from the energy required (Step 1).

If the result is positive (i.e., more energy is required to break the bonds in the reactants than is released when the bonds in the products are formed), the reaction is endothermic.

If the result is negative (i.e., less energy is required to break the bonds in the reactants than is released when the bonds in the products are formed), the reaction is exothermic.

In this case, since the sum of reactant bond dissociation energies is greater than the sum of product bond dissociation energies, the overall heat of the reaction will be endothermic.