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Two moles of ammonia gas are introduced ...

Two moles of ammonia gas are introduced into a previously evacuated `1.0" dm"^(3)` vessel in which it partially dissociates at high temperature. At equilibrium `1.0` mole of ammonia remains. The equilibrium constant `K_(c)` for the dissociation is

A

`27//16 ("mole dm"^(-3))^(2)`

B

`27//8("mole dm"^(-3))^(2)`

C

`27//4("mole dm"^(-3))^(2)`

D

None of these

Text Solution

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The correct Answer is:
A
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