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Phosphorous pentachloride when heated in...

Phosphorous pentachloride when heated in a sealed tube at `700 K` it undergoes decomposition as
`PCl_(5)(g) hArr PCl_(3)(g)+Cl_(2)(g), K_(p)=38` atm
Vapour density of the mixture is `74.25`.
Equilibrium constant `K_(c)` for the reaction will be

A

`0.66 M`

B

`0.56 M`

C

`0.46 M`

D

`0.36 M`

Text Solution

Verified by Experts

The correct Answer is:
A
`K_(p)=K_(c)(RT)^(Deltan), Deltan=3-1=2`
`:. K_(p)=K_(c)(RT)^(2)`
or `K_(c)=K_(p)/((RT)^(2))=38/((8.314xx700)^(2))`
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