Which of the following statement(s) is/are incorrect? — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

Entropy is a state function, so $\Delta S$ is identical for reversible and irreversible paths between the same states. An adiabatic process can be irreversible (generating entropy), so $\Delta S$ is not strictly zero. Real gases undergoing free expansion (adiabatic, $w=0$) can change temperature due to Joule-Thomson effects.