If value of any Thermodynamic parameter is zero than both the options, one with plus sign and other with negative should be selected. Column I (Reactions) Column II (Signs of Thermodynamic parameter) A Isothermal expansion of ideal gas P Δ H = + , Δ S = + Δ G = - B Any substance at its normal freezing point and 1 atm pressure, A ( S ) leftharpoons A (l) Q Δ H = - , Δ S = + Δ G = - C Condensation of any gas into liquid R Δ H = - , Δ S = + Δ G = - D A reaction which is spontaneous at all the temperatures S Δ H = - , Δ S = - Δ G = + T Δ H = + , Δ S = + Δ G = +

Question

If value of any Thermodynamic parameter is zero than both the options, one with plus sign and other with negative should be selected. Column I (Reactions) Column II (Signs of Thermodynamic parameter) A Isothermal expansion of ideal gas P Δ H = + , Δ S = + Δ G = - B Any substance at its normal freezing point and 1 atm pressure, A ( S ) leftharpoons A (l) Q Δ H = - , Δ S = + Δ G = - C Condensation of any gas into liquid R Δ H = - , Δ S = + Δ G = - D A reaction which is spontaneous at all the temperatures S Δ H = - , Δ S = - Δ G = + T Δ H = + , Δ S = + Δ G = + (A) (A) P,Q (B) P,T (C) R,S (D) P (B) (A) P,Q (B) P,T (C) R,S (D) Q (C) (A) P,Q (B) P,T (C) R,S (D) R (D) (A) P,Q (B) P,T (C) R,S (D) S

Tardigrade Admin · Accepted Answer

Correct answer is (b) (A) P,Q (B) P,T (C) R,S (D) Q

Column I (Reactions)		Column II (Signs of Thermodynamic parameter)
A	Isothermal expansion of ideal gas	P	$Δ H = +, Δ S = + Δ G = -$
B	Any substance at its normal freezing point and $1 a t m$ pressure, $A_{(S)} ⇌ A_{(l)}$	Q	$Δ H = -, Δ S = + Δ G = -$
C	Condensation of any gas into liquid	R	$Δ H = -, Δ S = + Δ G = -$
D	A reaction which is spontaneous at all the temperatures	S	$Δ H = -, Δ S = - Δ G = +$
		T	$Δ H = +, Δ S = + Δ G = +$