Describe fundamentals of thermodynamics with emphasis of free energy concept.
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Free energy, in thermodynamics, energy-like property or state function of a system in thermodynamic equilibrium. ... If U is the internal energy of a system, PV the pressure-volume product, and TS the temperature-entropy product (T being the temperature above absolute zero), then F = U − TS and G = U + PV − TS.
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Free energy is a gauge of a system's ability to perform work.
Fundamentals of thermodynamics:
- It distinguishes between three different energy transfer types: heat flow, dissipative work, and nondissipative work.
- It provides more accurate definitions of internal energy and heat after having defined work in precise mechanical terms.
- When the temperature is constant across a system, it is considered to be in thermal equilibrium.
- Thermodynamics provides the framework for many other crucial ideas that the modern world depends on, including heat engines, power plants, chemical reactions, freezers, and many others.
Free energy concept:
- In thermodynamics, free energy is an energy-like characteristic or a state function of a system that is in thermodynamic equilibrium.
- Energy has dimensions, and free energy has a value that depends on the system's current state rather than its past.
- Systems' ability to evolve and how much work they can produce are both determined by free energy.
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