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The equilibrium established during therm...

The equilibrium established during thermal dissociation of `PCl_(5)(g)` in a closed vessel is as follows:
`PCl_(5)(g)hArr PCl_(3)(g)+Cl_(2)(g)`
If the degree of dissociation of `PCl_(5)(g)` at equilibrium be 'x', then show that (1) 'x' is inversely proportional to the square root of the total pressure of reaction mixture at equilibrium and (2) 'x' increases with increase in volume of the system.

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