At temperature T, a compound AB2 (g) diassociates according to the reaction : 2AB2(g) [reverisble sign ] 2AB(g) + B2 - Chemistry - Equilibrium

Question

At temperature T, a compound AB2 (g) diassociates
according to the reaction :
2AB2(g) [reverisble sign ] 2AB(g) + B2
with degree of dissociation, x, which is small compared to unity
Deduce the expression for x in terms of equillibrium constant
Kp and the total pressure

Karuna Gupta · Accepted Answer

Hi,
The answer to your question is as follows:
2AB2 (g)
â†” 2AB (g) +
B2(g)
Initially pi 0
0
At equ pi-2x 2x
x
Therefore P
(Total pressure) = pi + x or x=
p-pi
Now Kp
= p(B2) p
(AB)2/(pAB2)2

At temperature T, a compound AB2 (g) diassociates according to the reaction : 2AB2(g) [reverisble sign ] 2AB(g) + B2. with degree of dissociation, x, which is small compared to unity. Deduce the expression for x in terms of equillibrium constant Kp and the total pressure.

At temperature T, a compound AB₂ (g) diassociates according to the reaction :

2AB₂(g) [reverisble sign ] 2AB(g) + B₂.

with degree of dissociation, x, which is small compared to unity. Deduce the expression for x in terms of equillibrium constant K_p and the total pressure.