# What are examples for state functions?

List some examples of state functions. Check all that apply:

1. internal energy
2. work
3. volume
4. pressure

I know that a state function is independent of the path taken, so I think work and volume are state functions. Am I correct?

• No. Work is not a state function. To be more precise about the definition of a state function, the change in a state function from thermodynamic equilibrium state A to thermodynamic equilibrium state B is unique and independent of any and all process paths that take the system from state A to state B. In the case of work, the amount of work required to get from state A to state B depends on the process path, and varies for example with the amount of heat added or removed during the process or if the process is reversible or not. Oct 23, 2015 at 15:03
• Work and heat are major examples that are not state functions. Major examples of state functions are internal energy, entropy, enthalpy, free energy, and Heimholtz energy. Aug 21, 2016 at 10:01