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- https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Beginning_Chemistry_(Ball)/07%3A_Energy_and_Chemistry/7.06%3A_Hess's_LawHess's law allows us to combine reactions algebraically and then combine their enthalpy changes the same way.
- https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Beginning_Chemistry_(Ball)/07%3A_Energy_and_Chemistry/7.07%3A_Formation_ReactionsA formation reaction is the formation of one mole of a substance from its constituent elements. Enthalpies of formation are used to determine the enthalpy change of any given reaction.
- https://chem.libretexts.org/Bookshelves/General_Chemistry/Interactive_Chemistry_(Moore_Zhou_and_Garand)/04%3A_Unit_Four/4.01%3A_Day_27-_Thermochemistry_and_EnthalpyThe enthalpy change for a gas-phase chemical reaction, Δ r H, equals the sum of the enthalpy required to break each of the bonds in the reactant molecules (energy in, positive sign) plus the sum of th...The enthalpy change for a gas-phase chemical reaction, Δ r H, equals the sum of the enthalpy required to break each of the bonds in the reactant molecules (energy in, positive sign) plus the sum of the enthalpy released when each of the bonds in the product molecules forms (energy out, negative sign).
- https://chem.libretexts.org/Courses/Fullerton_College/Beginning_Chemistry_(Chan)/09%3A_Energy_and_Chemistry/9.07%3A_Formation_ReactionsA formation reaction is the formation of one mole of a substance from its constituent elements. Enthalpies of formation are used to determine the enthalpy change of any given reaction.
- https://chem.libretexts.org/Courses/Nassau_Community_College/Principles_of_Chemistry/08%3A_Energy_and_Chemistry/8.07%3A_Hess's_LawHess's law allows us to combine reactions algebraically and then combine their enthalpy changes the same way.
- https://chem.libretexts.org/Courses/Brevard_College/CHE_104%3A_Principles_of_Chemistry_II/04%3A_Thermochemistry_and_Thermodynamics/4.12%3A_Hess's_LawHess's law allows us to combine reactions algebraically and then combine their enthalpy changes the same way.
- https://chem.libretexts.org/Courses/Nassau_Community_College/Principles_of_Chemistry/08%3A_Energy_and_Chemistry/8.06%3A_Formation_ReactionsA formation reaction is the formation of one mole of a substance from its constituent elements. Enthalpies of formation are used to determine the enthalpy change of any given reaction.
- https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/Thermodynamics_and_Chemical_Equilibrium_(Ellgen)/08%3A_Enthalpy_and_Thermochemical_Cycles/8.06%3A_Standard_Enthalpies_of_ReactionIf we have the enthalpies of formation, we can compute the enthalpy change for the reaction. We can demonstrate this by writing out the chemical equations corresponding to the formation of A, B, C, an...If we have the enthalpies of formation, we can compute the enthalpy change for the reaction. We can demonstrate this by writing out the chemical equations corresponding to the formation of A, B, C, and D from their elements. When we multiply these chemical equations by the appropriately signed stoichiometric coefficient and add them, we obtain the chemical equation for the indicated reaction of A and B to give C and D. Because enthalpy is a state function.
- https://chem.libretexts.org/Courses/Fullerton_College/Beginning_Chemistry_(Chan)/09%3A_Energy_and_Chemistry/9.06%3A_Hess's_LawHess's law allows us to combine reactions algebraically and then combine their enthalpy changes the same way.
