Enthalpy Change Calculator
Calculate ΔH for chemical reactions.
Enthalpy Change Calculator
ΔH°ᵣₓₙ = ΣΔH°ᵟ(products) - ΣΔH°ᵟ(reactants)
Standard Enthalpies of Formation (ΔH°ᵟ)
Enthalpy of Reaction
The standard enthalpy of reaction (ΔH°ᵣₓₙ) is the change in enthalpy when a reaction occurs at standard conditions (298.15 K and 1 atm). It's calculated by subtracting the sum of the standard enthalpies of formation of the reactants from that of the products, each multiplied by their stoichiometric coefficients.
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