Can the reversible work done in a process be considered as a measure of the change in gibbs energy

In thermodynamics, the Gibbs free energy Gibbs energy or Gibbs function  is a thermodynamic potential that measures the "usefulness" or process-initiating work obtainable from athermo dynamic system  at a constant temperature and pressure. Just as in mechanics  where potential energy is defined as capacity to do work, similarly different potentials have different meanings. The Gibbs free energy is the maximum  amount of non-expansion work that can be extracted from a closed system this maximum can be attained only in a completely reversible system. When a system changes from a well-defined initial state to a well-defined final state, the Gibbs free energy ΔG equals the work exchanged by the system with its surroundings, minus the work of the pressure forces, during a reversible transformation of the system from the same initial state to the same final state.

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