Question

difference between state function and path function

Answer 1

A state function is a property whose value does not depend on the path taken to reach that specific value. In contrast,functions that depend on the path from two values are callpath functions. Both path and state functions are often encountered in thermodynamics.

Answer 2

Answer :

• Path functions : It is a function that depends on the path taken to reach the specific point.

Need multiple integrals and limits of integration in order to integrate.

Multiple steps result in the different value.

For example : Heat and work are the example of path function.

• State functions : It is a function that do not depend on the path taken. It depends only on the current state of the system.

It can integrate using final and the initial values.

Multiple steps result in the same value.

For example : Internal energy, enthalpy and entropy are the example of state function.