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The equilibrium constant for the reactio...

The equilibrium constant for the reaction `H_2 (g) +I_2 (g) hArr 2 HI (g) ` is 32 at a given temperature.The equilibrium concentrations of `I_2` and HI are `0.5 xx 10 ^(-3) ` and `8xx 10^(-3)M` respectively.The equilibrium concentration of `H_2` is.

A

`1 xx 10^(-2) M`

B

`0.5 xx 10^(-3) m`

C

`2 xx10 ^(-3) m`

D

`4 xx 10 ^(-3) M`

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