# Is delta S the same in reversible and irreversible processes?

I've read that change in entropy of a system is the same for a system in reversible and irreversible processes since it is a state function and does not depend on the pathway. Does this only apply to the system since I understand change in entropy of the universe is always positive for irreversible processes?

• I don't see the contradiction between the two facts. The entropy of anything, including the entropy of the universe, is a state function. Why would that stop it from increasing, though? The state of the universe isn't static, so there's no reason why $\Delta S$ should be 0. – orthocresol Jan 6 at 20:11