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At a particular temperature, PCl(5)(g) ...

At a particular temperature, `PCl_(5)(g)` undergoes 50% dissociation. The equilibrium constant for `PCl_(5)(g) rarr PCl_(3)(g) + Cl_(2)(g)` is 2atm. The pressure of the equilibrium mixture is

A

2 atm

B

6 atm

C

8 atm

D

5 atm

Text Solution

Verified by Experts

The correct Answer is:
B
`PCl_(5) rarr PCl_(3)+ Cl_(2)`
`K_(p) = (0.5/1.5)p(0.5/1.5)p/(0.5/1.5)p implies k_(p) = (0.5/1.5)p`
`2 = p/3 implies p = 2 xx 3 = 6 atm`
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