The equilibrium constant for the reactio...

The equilibrium constant for the reaction, `H_(2)(g) + I_(2)(g) hArr 2HI(g)` is 64 at a certain temperature. The equilibrium concentrations of `H_(2)` and HI are `2 mol//L and 16 mol//L` respectively. What is the equilibrium concentration (`"in "mol//L`) of `I_(2)` ?

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B, C, D

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