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At a certain temperature T, a compound A...

At a certain temperature T, a compound `AB_(4)(g)` dissociates as `2AB_(4)(g)hArrA_(2)(g)+4B_(2)(g)` with a degree of dissociation x, which is very small as compared to unity. The expression of `K_(p)` interms of x and total equilibrium pressure p is-

A

`8P^3x^5`

B

`256 P^3x^5`

C

`4 Px^2`

D

None of these

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A
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