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PCl5 decomposes as PCl5(g) hArr PCl3(g)+...

`PCl_5` decomposes as `PCl_5(g) hArr PCl_3(g)+Cl_2(g)`.If at equilibrium , total pressure is P and density of gaseous mixture is d at temperature T then degree of dissociation `(alpha)` is :
(Molecular wt. of `PCl_5=M`)

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