Match the change in Column I with its effect on the equilibrium N 2 ( g ) + 3 H 2 ( g ) ⇌ 2 N H 3 ( g ) in Column II (a Column I entry may match more than one Column II entry): Column I (Change)

Question

Match the change in Column I with its effect on the equilibrium $N_{2} (g) + 3 H_{2} (g) ⇌ 2 N H_{3} (g)$ in Column II (a Column I entry may match more than one Column II entry):

Column I (Change)	Column II (Effect)
(P) Pressure increased at constant T by compression	(1) Equilibrium shifts forward
(Q) A catalyst is added	(2) Equilibrium shifts backward
(R) Inert gas added at constant volume	(3) No shift in equilibrium
(S) Inert gas added at constant pressure	(4) $K$ remains unchanged
	(5) $K$ increases

Choose the option with the correct matching:

TestHub · Accepted Answer

(P) Fewer moles on the right: forward (1); $K$ depends only on T (4).

(Q) A catalyst does not shift the equilibrium (3) or change $K$ (4).

(R) Constant volume: partial pressures are unchanged, so no shift (3, 4).

(S) Constant pressure: volume rises, so the reaction moves to the side with more moles, backward (2, 4).

Correct matching: P to 1,4; Q to 3,4; R to 3,4; S to 2,4. Answer: (B).

Chemistry - Chemical Equilibrium Question with Solution | TestHub

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