평형에서의 압력. NH4OCONH2(s) ⇌ 2NH3(g) + CO2(g)

평형에서의 압력. NH4OCONH2(s) ⇌ 2NH3(g) + CO2(g)

 

 

At 25℃, Kp = 2.9×10^(-3) for the reaction

NH4OCONH2(s) ⇌ 2NH3(g) + CO2(g)

 

In an experiment carried out at 25℃, a certain amount of NH4OCONH2

is placed in an evacuated rigid container and allowed to come to equilibrium.

Calculate the total pressure in the container at equilibrium.

 

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ICE 도표를 작성하면,

 

............. NH4OCONH2(s) ⇌ 2NH3(g) + CO2(g)

초기(atm) ............................. 0 .............. 0

변화(atm) ............................ +2x .......... +x

평형(atm) ............................. 2x ............ x

 

 

 

Kp = (P_NH3)^2 (P_CO2)

 

2.9×10^(-3) = (2x)^2 (x) = 4x^3

 

x = [(2.9×10^(-3)) / 4]^(1/3) = 0.0898 atm

 

 

 

P_tot = P_NH3 + P_CO2

= 2(0.0898) + (0.0898) = 0.269 atm

 

 

 

답: 0.27 atm

 

 

 

 

[키워드] NH4OCONH2 기준문서, Kp = 2.9×10^(-3) NH4OCONH2(s) ⇌ 2NH3(g) + CO2(g) total pressure

 

[①22/06/15]