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- DictionaryEn·er·gy/ˈenərjē/
noun
- 1. the strength and vitality required for sustained physical or mental activity: "changes in the levels of vitamins can affect energy and well-being"
- 2. power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines: "nuclear energy"
Free energy, in thermodynamics, energylike property or state function of a system in thermodynamic equilibrium. Free energy has the dimensions of energy, and its value is determined by the state of the system and not by its history.
- The Editors of Encyclopaedia Britannica
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What is free energy in physics?
What is free energy in thermodynamics?
What is the difference between free energy and free energy?
What is a physical value of free energy?
The free energy is the portion of any first-law energy that is available to perform thermodynamic work at constant temperature, i.e., work mediated by thermal energy. Free energy is subject to irreversible loss in the course of such work. [1] .
In physics and physical chemistry, free energy refers to the amount of internal energy of a thermodynamic system that is available to perform work. There are different forms of thermodynamic free energy: Gibbs free energy is the energy that may be converted into work in a system that is at constant temperature and pressure.
The standard free energy change (∆Gº’) of a chemical reaction is the amount of energy released in the conversion of reactants to products under standard conditions.
- I thought the same as you. Think it's an error. The second part of explanation (i.e. ATP + H2O -> ADP + Pi) is exergonic, so it should be -7.3kcal/mol
- It is the amount of work a thermodynamic system can perform. It is _free_ to do any work, i.e. the internal energy minus any energy that is unavail...
- Nope! Gibb's free energy is the fancy name for a calculation that tells you if a reaction will go spontaneously, and if not, the amount of energy y...
- "A thermodynamic quantity equal to the enthalpy (of a system or process) minus the product of the entropy and the absolute temperature." Origin nam...
- When a reaction is endergonic, it means that the reaction will not happen _spontaneously_, but may happen if there were some changes in energy. Rea...
- Heat can be useec to do work. For example, a steam engine can use heat energy in steam to move pistons. However, heat is transferred to the surroun...
- In german we call this process 'unsolicited'. That means the process needs no specific catalyst or starting event to occur. It just happens by itse...
- Standard conditions for biochemistry refer to a set of specific conditions that are used as a reference point to ensure consistency and accuracy in...
- Just so you know translated (to English it comes out to...) "A biochemical reaction where delta G is equal to zero, is it considered energonic or e...
- free energy is energy that can do work when temperature and pressure are uniform, as in a living cell
Sep 28, 2023 · Define Gibbs free energy, and describe its relation to spontaneity. Calculate free energy change for a process using free energies of formation for its reactants and products. Calculate free energy change for a process using enthalpies of formation and the entropies for its reactants and products.
In thermodynamics, the Gibbs free energy (or Gibbs energy as the recommended name; symbol ) is a thermodynamic potential that can be used to calculate the maximum amount of work, other than pressure-volume work, that may be performed by a thermodynamically closed system at constant temperature and pressure.
Jan 30, 2023 · Gibbs free energy, denoted G, combines enthalpy and entropy into a single value. The change in free energy, ΔG, is equal to the sum of the enthalpy plus the product of the temperature and entropy of the system. ΔG can predict the direction of the chemical reaction under two conditions: constant temperature and. constant pressure.
