Match the list for the following reaction started with NH 2 COONH 4 ( s ) only : NH 2 COONH 4 ( s ) ⇌ 2 NH 3 ( g ) + CO 2 ( g ) At equilibrium partial pressure of NH 3 and CO 2 are res

Question

Match the list for the following reaction started with $NH_{2} COONH_{4} (s)$ only :

$NH_{2} COONH_{4} (s) ⇌ 2 NH_{3} (g) + CO_{2} (g)$

At equilibrium partial pressure of $NH_{3}$ and $CO_{2}$ are respectively then :

List - I	List - II
(P) Partial pressure of $NH_{2} COONH_{4} (s)$	(1) $p_{NH_{3}}^{2} \times p_{CO_{2}}$
(Q) $K_{p}$	(2) $p_{NH_{3}} + p_{CO_{2}}$
(R) Total pressure at equilibrium	(3) $(p_{NH_{3}}^{2} \times p_{CO_{2}}) \times (RT)^{- 3}$
(S) $K_{C}$	(4) Zero
	(5) $3 \times p_{CO_{2}}$

The correct option is:

TestHub · Accepted Answer

Question Explanation: Matching equilibrium terms for solid ammonium carbamate dissociation.

Concept: Chemical Equilibrium Expressions $(K_{p}, K_{c})$ .

Solution: Pure solids have activity

1. $K_{p}$ uses partial pressures, $K_{c}$ uses concentrations, and total pressure is the sum of partial pressures.

$K_{p} = (P_{N H_{3}})^{2} \times P_{C O_{2}}; K_{C} = K_{P} (RT)^{- Δ n_{g}}$

Total $P = P_{N H_{3}} + P_{C O_{2}}$

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