State Function And Path Function | Thermodynamics class 11 chemistry by arvind arora sir 

State Function vs Path Function
State function is a thermodynamic term that is used to name a property whose value does not depend on the path taken to reach that specific value. Path function is a thermodynamic term that is used to name a property whose value depends on the path taken to reach that specific value.
A state function is a property describes a particular state, without depending on the path taken to reach this state. In contrast, functions whose value depends on the path taken to get between two states are called path functions.
A state function describes equilibrium states of a system, thus also describing the type of system. ... In this law, one state variable (e.g., pressure, volume, temperature, or the amount of substance in a gaseous equilibrium system) is a function of other state variables so is regarded as a state function.
Path functions are properties or quantities whose values depend on the transition of a system from the initial state to the final state. The two most common path functions are heat and work.