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- Free energy, entropy, and enthalpy are important concepts in thermodynamics:
- Free energy (G) combines enthalpy and entropy and is given by G = H − TS1234.
- Enthalpy (H) represents the heat content of a system.
- Entropy (S) measures the disorder or randomness of a system.
- The change in free energy (ΔG) is related to the enthalpy change (ΔH) and the temperature (T)35.
Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.Free energy functions are Legendre transforms of the internal energy. The Gibbs free energy is given by G = H − TS, where H is the enthalpy, T is the absolute temperature, and S is the entropy.en.wikipedia.org/wiki/Thermodynamic_free_energyGibbs 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.chem.libretexts.org/Bookshelves/Physical_and_Th…The equation relating these factors is: ∆G = ∆H–T∆S, where G is free energy, H is enthalpy, S is entropy, and T is temperature (in Kelvin). Although temperature values will always be positive, entropy, enthalpy, and free energy values can be positive or negative.terrificscience.org/lessonpdfs/Entropy.pdfWhen a process occurs at constant temperature T and pressure P, we can rearrange the second law of thermodynamics and define a new quantity known as Gibbs free energy: Gibbs free energy = G = H − TS where H is enthalpy, T is temperature (in kelvin, K), and S is the entropy.www.khanacademy.org/science/chemistry/thermod…Recall that the determining factors for spontaneity of a reaction are the enthalpy and entropy changes that occur for the system. The free energy change of a reaction is a mathematical combination of the enthalpy change and the entropy change. ΔGo = ΔHo − TΔSochem.libretexts.org/Bookshelves/Introductory_Che… - People also ask
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