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The system PCl(5)(g) hArr PCl(3)(g)+Cl(2...

The system `PCl_(5)(g) hArr PCl_(3)(g)+Cl_(2)(g)` attains equilibrium. If the equilibrium concentration of `PCl_(3)(g)` is doubled, the concentration of `Cl_(2)(g)` would become

A

`1//4` its original value

B

`1//2` its original value

C

Twice its original value

D

Unpredictable

Text Solution

Verified by Experts

The correct Answer is:
D
`PCl_(5) hArr PCl_(3)+Cl_(2)`
If the concentration of `PCl_(3)` is doubled, it only predicts, that reaction will proceed backward. (Le-Chatlier's principle). So the concentration of `Cl_(2)` is unpredictable.
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