Chemistry - Thermodynamics - II Question with Solution | TestHub

(a) Entropy change along the reversible path: true. (c) For the irreversible path, S_A - S_B > ∫_B^A δ q_irr/T (Clausius inequality), so equality is false. (d) Adding the paths, ∮ δ q/T = (S_B - S_A) + ∫_B^A δ q_irr/T < (S_B - S_A) + (S_A - S_B) = 0: true. (b) The surroundings receive the heat the system loses, so Δ S_surr = -∮ δ q/T > 0; with Δ S_sys = 0 over the cycle this makes Δ S_univ > 0: true. Ans: (a), (b), (d).