GKFix MCQ Question

How is the enthalpy change related to bond enthalpies in a reaction?

• A. ∆rH° = sum of bond enthalpies formed – sum of bond enthalpies broken
• B. ∆rH° = sum of bond enthalpies broken – sum of bond enthalpies formed
• C. ∆rH° = sum of bond enthalpies of products – sum of bond enthalpies of reactants
• D. ∆rH° = sum of bond enthalpies of reactants + sum of bond enthalpies of products