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The 26 pages that link to State function, each with the reason it gives.

• Equation of stateRelated: Equations of state relate state variables rather than describing a process path.

• EntropyNarrower topic: Entropy change depends on endpoints even when the actual process is irreversible.

• Gibbs free energyNarrower topic: Gibbs free energy is a state function, so its change depends only on endpoints.

• First law of thermodynamicsNarrower topic: Internal energy is a state function, so its change depends only on endpoints.

• Second law of thermodynamicsRelated: Entropy is a state function, allowing its change to be compared across different processes.

• EnthalpyNarrower topic: Enthalpy’s path independence distinguishes it from heat and work.

• Heat capacityNarrower topic: Heat capacity is defined from changes between states, with the process constraint specified.

• Joule–Thomson effectRelated: Enthalpy is a state function, so its inlet and outlet values can be compared.

• Reversible processNarrower topic: State functions make endpoint comparisons possible even when reversible and irreversible paths differ.

• Thermodynamic stateRelated: It assigns the same value whenever the system returns to the same state.

• Clausius–Clapeyron relationNarrower topic: Entropy and volume changes are state differences, making the relation independent of transition path.

• Thermodynamic cycleRelated: Internal energy returns to its initial value when a cycle closes, regardless of its path.

• Isothermal processRelated: Internal energy is a state function even when heat and work depend on the path.

• Thermodynamic potentialNarrower topic: Thermodynamic potentials are state functions, unlike heat and work.

• Free energyNarrower topic: Free energy is determined by the system's state, allowing changes to be calculated from endpoints.

• State variableRelated: State variables are commonly treated as coordinates or values of state functions.

• Thermodynamic processRelated: State functions distinguish endpoint changes from path-dependent quantities.

• Maxwell relationsNarrower topic: The relations apply to derivatives of state functions rather than arbitrary path-dependent quantities.

• Hess's lawNarrower topic: Its path independence is the thermodynamic basis of Hess's law.

• Fundamental thermodynamic relationNarrower topic: Internal energy and entropy are state functions, so their differentials describe state changes.

• Clausius theoremRelated: The cycle integral motivates entropy’s state-function status.

• Gibbs–Helmholtz equationNarrower topic: The equation relates state functions rather than process-dependent heat or work.

• Endothermic processNarrower topic: Enthalpy change is path-independent even when the process’s heat transfer depends on conditions.

• Exothermic processRelated: Enthalpy is a state function, while heat itself depends on the process path.

• Germain Henri HessRelated: The path independence of enthalpy explains the mathematical basis of Hess’s law.

• State (condition)Related: It is a mathematical property of states, distinct from the state being described.