Although heat is a path function but heat absorbed by the system under certain specific conditions is independent of path. What are those conditions? Explain.

Although heat is a path function but heat absorbed by the system under

1.	Although heat is a path function but heat absorbed by the system under certain specific conditions is independent of path. What are those conditions? Explain.
Answer» a path function but is changed into STATE function. Sometimes, when heat is absorbed by the system, it is INDEPENDENT of the path. There are TWO CONDITIONS where heat is independent of path. i) At constant Volume By the FIRST law of thermodynamics, we have Since volume is constant, which implies ∆V = 0, , Which is the change in internal energy. ii) At Constant Pressure But, we have Which is the change in enthalpy.