Ammonium carbamate dissociates as: N H 2 COON H 4 ( s ) ⇌ 2 N H 3 ( g ) + C O 2 ( g ) In a closed vessel containing ammonium carbamate in equilibrium, ammonia is added such that the partial pr

Question

Ammonium carbamate dissociates as: N H 2 ​ COON H 4 ​ ( s ) ⇌ 2 N H 3 ​ ( g ) + C O 2 ​ ( g ) In a closed vessel containing ammonium carbamate in equilibrium, ammonia is added such that the partial pressure of N H 3 ​ at the new equilibrium now equals the original total pressure. Calculate the ratio of the partial pressure of C O 2 ​ now to the original partial pressure of C O 2 ​ .

TestHub · Accepted Answer

NH 2 ​ COONH 4 ( s ) ​ ⇌ 2 NH 3 ( g ) ​ + CO 2 ( g ) ​ Let partial pressure at equilibrium of CO 2 ​ be P , then P NH 3 ​ ​ = 2 P and total pressure at equilibrium = 3 P K P ​ = ( 2 P ) 2 × P = 4 P 3 … (1) If NH 3 ​ is added and the pressure of NH 3 after addition at equilibrium is 3P K P ​ = 4 P 3 = ( P NH 3 ​ ′ ​ ) 2 × P CO 2 ​ ′ ​ ⇒ P CO 2 ​ ′ ​ = P ′ 4 ​ ∴ ratio of P CO 2 ​ ​ P CO 2 ​ ′ ​ ​ = 9 4 ​

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