GKFix MCQ Question

What is the standard enthalpy of reaction (∆rH°) in terms of bond enthalpies?

• A. Σ bond enthalpies of products – Σ bond enthalpies of reactants
• B. Σ bond enthalpies of reactants + Σ bond enthalpies of products
• C. Σ bond enthalpies of reactants – Σ bond enthalpies of products
• D. It is always zero