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Prove that the pressure necessary to obt...

Prove that the pressure necessary to obtain `50%` dissociation of `PCl_(5)` at `250^(@)C` is numerically three times of `K_(p)`.

A

`K_p = frac{9}{16}P`

B

`K_p=frac{16}{9}P`

C

`K_p=frac{2}{5}P`

D

`K_p=frac{5}{2}P`

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