free energy change
The total energy change in a system that is available to do useful work as the system goes from its initial state to its final state at constant temperature and pressure.

Microbiology. . 2009.

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  • free-energy change —  Free Energy Change  (G)  Изменение свободной энергии (G)   Изменение свободной энергии в ходе любого процесса – важнейший термодинамический параметр. Применительно к химическим процессам: химическая реакция протекает лишь в случае G < 0, т.е …   Толковый англо-русский словарь по нанотехнологии. - М.

  • standard free energy change — The free energy change of a reaction at 1 atmosphere pressure when all reactants and products are present in their standard states; usually the temperature is 25°C …   Dictionary of microbiology

  • free energy — Gibbs free energy (G) the thermodynamic function G = H − TS, where H is enthalpy, T absolute temperature, and S entropy. For chemical reactions occurring at a constant temperature and pressure, the free energy change ΔG =… …   Medical dictionary

  • free energy — Thermodynamics. 1. See Gibbs function. 2. See Helmholtz function. * * * Measure of the total combined energies within a system, derived from heats of transformation, disorder, and other forms of internal energy (e.g., electrostatic charges). A… …   Universalium

  • Gibbs free energy — Thermodynamics …   Wikipedia

  • Helmholtz free energy — In thermodynamics, the Helmholtz free energy is a thermodynamic potential which measures the “useful” work obtainable from a closed thermodynamic system at a constant temperature and volume. For such a system, the negative of the difference in… …   Wikipedia

  • Thermodynamic free energy — In thermodynamics, the term thermodynamic free energy refers to the amount of work that can be extracted from a system, and is helpful in engineering applications. It is a subtraction of the entropy of a system ( useless energy ) from the total… …   Wikipedia

  • Helmhotz free energy — (A or F in US) Similar to Gibbs free energy but with internal energy substituted for enthalpy. A negative change in A is indicative of a spontaneous change in a closed system at constant volume …   Dictionary of automotive terms

  • Energy storage — is the storing of some form of energy that can be drawn upon at a later time to perform some useful operation. A device that stores energy is sometimes called an accumulator. All forms of energy are either potential energy (eg. chemical,… …   Wikipedia

  • Energy — This article is about the scalar physical quantity. For other uses, see Energy (disambiguation). Energetic redirects here. For other uses, see Energetic (disambiguation) …   Wikipedia

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