Enthalpy & Entropy Calculator

ΔH° = Σn·ΔHf°(products) - Σn·ΔHf°(reactants)
Enter the sum of enthalpies for products and reactants.

Σn·ΔHf°(products)

Σn·ΔHf°(reactants)

kJ

ΔS° = Σn·S°(products) - Σn·S°(reactants)
Enter the sum of entropies for products and reactants.

Σn·S°(products)

Σn·S°(reactants)

J/K

ΔG = ΔH - TΔS
Calculate Gibbs free energy to determine spontaneity.

ΔH (Enthalpy change)

ΔS (Entropy change)

Temperature

Result Unit