How is the standard reaction enthalpy (∆rH⁰) calculated using standard enthalpies of formation?

Question

Accepted Answer

∆rH⁰ = Σaᵢ∆fH⁰(products) – Σbᵢ∆fH⁰(reactants)

Answer

∆rH⁰ = Σ∆fH⁰(reactants) + Σ∆fH⁰(products)

Answer

∆rH⁰ = Σ∆fH⁰(products) + Σ∆fH⁰(reactants)

Answer

∆rH⁰ = Σ∆fH⁰(reactants) – Σ∆fH⁰(products)

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