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CGP EDU Academic Team
Published on: August 14, 2026
The dissociation equilibrium of a gas AB 2 can be represented as,
2AB 2 (g) 
2AB(g) + B 2 (g)
The degree of dissociation is x and is small as compared to 1. The expression relating the degree of dissociation (x) with equilibrium constant K p and total pressure P is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
2AB 2 (g) 
2AB (g) + B 2 (g)
At equilibrium 2(1 - x) 2x x
Total moles = (2 + x)
Partial pressures
(x is small)
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