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1.0 mole of N(2) and 3.0 mole of PCl(5)...

1.0 mole of `N_(2)` and `3.0` mole of `PCl_(5)` are placed in `100L` vessel heated to `227^(@)C`. The following equilibrium is established in the container
`PCl_(5)(g(hArrPCl_(3)(g)+Cl_(2)(g)`
The equilibrium pressure is `2.0` atm. (`R=00.08` and `L "mole"1^(-1)K^(-1)`)
The degree of dissociation for `PCl_(5):

A

`0.66`

B

`0.33`

C

`0.20`

D

`0.40`

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