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One mole of A reacts with one mole of B ...

One mole of A reacts with one mole of B to form 0.1 mole of C and 0.1 mole of D . What will be the value of the equilibrium constant ?
`A+BrArrC+D`

A

0.1

B

100

C

`(1)/(81)`

D

81

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