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Gibbs Free Energy Formula

Gibbs Free Energy=Enthalpy-(Temperature*Entropy)
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What is Gibbs Free Energy?

Gibbs energy was developed in the 1870s by Josiah Willard Gibbs. He originally termed this energy as the “available energy” in a system. His paper published in 1873, “Graphical Methods in the Thermodynamics of Fluids,” outlined how his equation could predict the behavior of systems when they are combined. Denoted by G, Gibbs Free Energy combines enthalpy and entropy into a single value. The sign of ΔG indicates the direction of a chemical reaction and determine if a reaction is spontaneous or not. When ΔG<0: the reaction is spontaneous in the direction written (i.e., the reaction is exergonic), when ΔG=0: the system is at equilibrium and there is no net change either in forward or reverse direction and when ΔG>0: the reaction is not spontaneous and the process proceeds spontaneously in the reserve direction.

How to Calculate Gibbs Free Energy?

Gibbs Free Energy calculator uses Gibbs Free Energy=Enthalpy-(Temperature*Entropy) to calculate the Gibbs Free Energy, Gibbs Free Energy is a thermodynamic potential that can be used to calculate the maximum of reversible work that may be performed by a thermodynamic system at a constant temperature and pressure. Gibbs Free Energy and is denoted by G symbol.

How to calculate Gibbs Free Energy using this online calculator? To use this online calculator for Gibbs Free Energy, enter Enthalpy (H), Temperature (T) and Entropy (S) and hit the calculate button. Here is how the Gibbs Free Energy calculation can be explained with given input values -> -1228 = 200-(85*16.8 ).

FAQ

What is Gibbs Free Energy?
Gibbs Free Energy is a thermodynamic potential that can be used to calculate the maximum of reversible work that may be performed by a thermodynamic system at a constant temperature and pressure and is represented as G=H-(T*S) or Gibbs Free Energy=Enthalpy-(Temperature*Entropy). Enthalpy is the thermodynamic quantity equivalent to the total heat content of a system, Temperature is the degree or intensity of heat present in a substance or object and Entropy is the measure of a system’s thermal energy per unit temperature that is unavailable for doing useful work.
How to calculate Gibbs Free Energy?
Gibbs Free Energy is a thermodynamic potential that can be used to calculate the maximum of reversible work that may be performed by a thermodynamic system at a constant temperature and pressure is calculated using Gibbs Free Energy=Enthalpy-(Temperature*Entropy). To calculate Gibbs Free Energy, you need Enthalpy (H), Temperature (T) and Entropy (S). With our tool, you need to enter the respective value for Enthalpy, Temperature and Entropy and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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