For the equilibrium:
if some inert gas is added at constant pressure, then which is true?
A
Dissociation of 
increases.
increases. B
Dissociation of 
decreases.
decreases. C
The equilibrium constant decreases.
D
No change occurs in equilibrium composition.
Text Solution
Verified by ExpertsThe correct answer is:
A
At constant pressure, adding an inert gas increases volume → partial pressures of reacting species drop → equilibrium shifts toward the side with more moles to oppose the change.
Here 
, so the reaction moves right; dissociation increases.
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