1.

In the thermal dissociation fo PCl_(5). the partical pressure in the gaseous equlibrium mixture is 1.0 atmosphere when half of PCl_(5) is found to dissociate. The equlibrium constant of the reaction (K_(p)) in atomosphere is

Answer»

<P>`0.25`
`0.50`
`1.00`
`0.3`

SOLUTION :`PCl_(5)overset(hArr)PCl_(3)+Cl_(2)`
`{:("Initial CONC.",1,0,0),("At EQULIBRIUM",0.5,0.5,0.5):}`
`K_(p)=(Px^(2))/((1-x^(2)))=(1xx0.5xx0.5)/([1-(0.5)^(2)])=(0.5xx0.5)/(0.75)=1/3=0.3`


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