Match each process in Column I with the entropy change of the system in Column II: Column I (Process) Column II (Entropy change) (P) Supercooled water freezing (1) Δ S = 0 (Q) Mixing of two ideal gase

Question

Match each process in Column I with the entropy change of the system in Column II:

Column I (Process)	Column II (Entropy change)
(P) Supercooled water freezing	(1) $Δ S = 0$
(Q) Mixing of two ideal gases at constant T and P	(2) $Δ S$ = positive
(R) Reversible adiabatic expansion of an ideal gas (system)	(3) $Δ S$ = negative

Choose the option with the correct matching:

TestHub · Accepted Answer

(P) Liquid to solid: the system becomes more ordered, $Δ S < 0$ (3).

(Q) Mixing of ideal gases is spontaneous, with no energy change, so $Δ S > 0$ (2).

(R) $q_{re v} = 0$ in a reversible adiabatic process, so $Δ S = 0$ (1).

Correct matching: P→3; Q→2; R→1. Answer: (C).

Chemistry - Thermodynamics - II Question with Solution | TestHub