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- Gibbs_free_energy abstract "In thermodynamics, the Gibbs free energy (IUPAC recommended name: Gibbs energy or Gibbs function; also known as free enthalpy to distinguish it from Helmholtz free energy) is a thermodynamic potential that measures the "usefulness" or process-initiating work obtainable from a thermodynamic system at a constant temperature and pressure (isothermal, isobaric). Just as in mechanics, where potential energy is defined as capacity to do work, similarly different potentials have different meanings. The Gibbs free energy (SI units J/mol) is the maximum amount of non-expansion work that can be extracted from a closed system; this maximum can be attained only in a completely reversible process. When a system changes from a well-defined initial state to a well-defined final state, the Gibbs free energy ΔG equals the work exchanged by the system with its surroundings, minus the work of the pressure forces, during a reversible transformation of the system from the same initial state to the same final state.Gibbs energy (also referred to as ∆G) is also the chemical potential that is minimized when a system reaches equilibrium at constant pressure and temperature. Its derivative with respect to the reaction coordinate of the system vanishes at the equilibrium point. As such, it is a convenient criterion of spontaneity for processes with constant pressure and temperature.The Gibbs free energy, originally called available energy, was developed in the 1870s by the American mathematician Josiah Willard Gibbs. In 1873, Gibbs described this "available energy" asthe greatest amount of mechanical work which can be obtained from a given quantity of a certain substance in a given initial state, without increasing its total volume or allowing heat to pass to or from external bodies, except such as at the close of the processes are left in their initial condition.The initial state of the body, according to Gibbs, is supposed to be such that "the body can be made to pass from it to states of dissipated energy by reversible processes." In his 1876 magnum opus On the Equilibrium of Heterogeneous Substances, a graphical analysis of multi-phase chemical systems, he engaged his thoughts on chemical free energy in full.".
- Gibbs_free_energy thumbnail Diamond.jpg?width=300.
- Gibbs_free_energy wikiPageExternalLink gibbs.html.
- Gibbs_free_energy wikiPageExternalLink G02629.html.
- Gibbs_free_energy wikiPageExternalLink c2.
- Gibbs_free_energy wikiPageExternalLink Gibbs.html.
- Gibbs_free_energy wikiPageExternalLink GibbsFreeEnergy.html.
- Gibbs_free_energy wikiPageExternalLink Gibbs.htm.
- Gibbs_free_energy wikiPageExternalLink product.htm.
- Gibbs_free_energy wikiPageExternalLink driving.
- Gibbs_free_energy wikiPageID "238181".
- Gibbs_free_energy wikiPageRevisionID "606489528".
- Gibbs_free_energy hasPhotoCollection Gibbs_free_energy.
- Gibbs_free_energy subject Category:Concepts_in_physics.
- Gibbs_free_energy subject Category:State_functions.
- Gibbs_free_energy subject Category:Thermodynamic_free_energy.
- Gibbs_free_energy type Abstraction100002137.
- Gibbs_free_energy type Cognition100023271.
- Gibbs_free_energy type Concept105835747.
- Gibbs_free_energy type Content105809192.
- Gibbs_free_energy type Function113783816.
- Gibbs_free_energy type FundamentalPhysicsConcepts.
- Gibbs_free_energy type Idea105833840.
- Gibbs_free_energy type MathematicalRelation113783581.
- Gibbs_free_energy type PsychologicalFeature100023100.
- Gibbs_free_energy type Relation100031921.
- Gibbs_free_energy type StateFunctions.
- Gibbs_free_energy comment "In thermodynamics, the Gibbs free energy (IUPAC recommended name: Gibbs energy or Gibbs function; also known as free enthalpy to distinguish it from Helmholtz free energy) is a thermodynamic potential that measures the "usefulness" or process-initiating work obtainable from a thermodynamic system at a constant temperature and pressure (isothermal, isobaric). Just as in mechanics, where potential energy is defined as capacity to do work, similarly different potentials have different meanings.".
- Gibbs_free_energy label "Energia libera di Gibbs".
- Gibbs_free_energy label "Energia livre de Gibbs".
- Gibbs_free_energy label "Energía de Gibbs".
- Gibbs_free_energy label "Entalpia swobodna".
- Gibbs_free_energy label "Enthalpie libre".
- Gibbs_free_energy label "Gibbs free energy".
- Gibbs_free_energy label "Gibbs-Energie".
- Gibbs_free_energy label "Vrije energie".
- Gibbs_free_energy label "Энергия Гиббса".
- Gibbs_free_energy label "طاقة غيبس الحرة".
- Gibbs_free_energy label "吉布斯自由能".
- Gibbs_free_energy sameAs Gibbsova_volná_energie.
- Gibbs_free_energy sameAs Gibbs-Energie.
- Gibbs_free_energy sameAs Energía_de_Gibbs.
- Gibbs_free_energy sameAs Enthalpie_libre.
- Gibbs_free_energy sameAs Energia_libera_di_Gibbs.
- Gibbs_free_energy sameAs 기브스_자유_에너지.
- Gibbs_free_energy sameAs Vrije_energie.
- Gibbs_free_energy sameAs Entalpia_swobodna.
- Gibbs_free_energy sameAs Energia_livre_de_Gibbs.
- Gibbs_free_energy sameAs m.01jjzl.
- Gibbs_free_energy sameAs Q334631.
- Gibbs_free_energy sameAs Q334631.
- Gibbs_free_energy sameAs Gibbs_free_energy.
- Gibbs_free_energy wasDerivedFrom Gibbs_free_energy?oldid=606489528.
- Gibbs_free_energy depiction Diamond.jpg.
- Gibbs_free_energy isPrimaryTopicOf Gibbs_free_energy.
