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Definition of State function

State function Definition from Science & Technology Dictionaries & Glossaries
General Chemistry Glossary
A property that depends only on the condition or "state" of the system , and not on the path used to obtain the current conditions. Energy, enthalpy, temperature, volume, pressure, and temperature are examples of state functions; heat and work are examples of non-state functions.
State function Definition from Encyclopedia Dictionaries & Glossaries
Wikipedia English - The Free Encyclopedia
In thermodynamics, a state function, function of state, state quantity, or state variable is a property of a system that depends only on the current state of the system, not on the way in which the system acquired that state (independent of path). A state function describes the equilibrium state of a system. For example, internal energy, enthalpy, and entropy are state quantities because they describe quantitatively an equilibrium state of a thermodynamic system, irrespective of how the system arrived in that state. In contrast, mechanical work and heat are process quantities because their values depend on the specific transition (or path) between two equilibrium states.

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