Which equation correctly relates the heat of reaction to the standard heats of formation?
∆h° = ∆hf ° (products) + ∆hf ° (reactants)
∆h° + ∆hf ° (products) = ∆hf ° (reactants)
∆h° = ∆hf ° (products) – ∆hf ° (reactants)
∆h° – ∆hf ° (reactants) = ∆hf ° (products)