[Elianna]

If I have 3 processes that an ideal gas goes through, can I say the overall entropy is 0?
It first goes through an reversible adiabatic  process, then through reversible isothermal one and then through an isochoric process, at the end of the last process its hits the point on the graph where it all started. (the graph is a function of p and V)

[mjc123]

Entropy is a state function. Therefore if the gas ends up in the same state (P,V,T) as it started, the entropy change (not "overall entropy") is zero, independent of the pathway.

[Elianna]

Thank you!