It is a thermodynamic property. It was defined by Josiah Willard Gibbs. It is denoted as G. Gibbs free energy is the energy associated with a chemical reaction that can be used to do work. The process will occur spontaneously at constant temperature and pressure. G is defined as,
G = H - TS
H --> Enthalpy
T --> Temperature ( Kelvin )
S --> Entropy
G = H - TS
H --> Enthalpy
T --> Temperature ( Kelvin )
S --> Entropy
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