Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The dissociation equilibrium of a gas 
can be represented as
The degree of dissociation is " X " and is small compared to the expression relating the degree of dissociation ( 
) with equilibrium constant 
and total pressure " P " is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
2AB 2 (g) ⇌ 2AB(g)+B 2 (g)
t=0 2 0 0
equilibrium 2-2x 2x x
Total no. of moles at equilibrium 
So; 
= 
= 
x= 
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