GKFix MCQ Question

How is the standard enthalpy of reaction calculated using formation enthalpies?

• A. ∆rH° = Σ∆fH°(reactants) + ∆fH°(products)
• B. ∆rH° = Σ∆fH°(products) – Σ∆fH°(reactants)
• C. ∆rH° = Σ∆fH°(reactants) – ∆fH°(products)
• D. ∆rH° = products – reactants