![]() Since Gibbs free energy is also a thermodynamic quantity, it is not possible to quantify its absolute value. It is called as Gibbs free energy in honour of Josiah Willard Gibbs (1839-1903), an American mathematician and physical chemist who developed the theory of chemical thermodynamics in 1870s at Yale University and also the concept of free energy. Gibbs Free Energy (G):įree energy is the component of the total energy of a system that is available to do work at constant temperature and pressure and is represented by the symbol G. In all spontaneous reactions such as oxidation of glucose or melting of ice, the ∆S is positive. ![]() When the products of a reaction are less complex or more disordered than the reactants, the reaction is said to proceed with gain in entropy (+∆S) or vice versa (-∆S). ![]() Any change in entropy or disorder accompanying a process from start to finish, is represented by ∆S. ![]()
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