Path function:
The thermodynamic Functions which depend on the path means how the process is carried out to reach a state from another state depends on path e.g. work & heat.
State function: Pressure, volume, temperature, Gibbs's free energy, internal energy, entropy
Path function: Work, Heat, Loss of energy due to friction
Note : S, U, H, V, T etc are state function
but ∆S, ∆U, ∆H, ∆V, ∆T, etc.are not state function. Infact ∆ terms
are not function itself and it is very misleading and frequently asked in the
exams.
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