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For the equilibrium AB(g) iff A(g) + B(g...

For the equilibrium `AB(g) iff A(g) + B(g) K_p` is equal to 4 times the total pressure. The number of moles of ‘A’ formed is

A

`sqrt5/2`

B

2

C

`sqrt5`

D

`2/sqrt5`

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The correct Answer is:
D
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