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The equilibrium, concentration of H (2),...

The equilibrium, concentration of `H _(2), I _(2), ` and HI are respectively `5. 0 , 3. 0` and `17 mol L ^(-1)` . What will be the value of `K _(c)` for the reaction `H _(2) + I _(2) ` `rarr` `2HI` ?

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For the reaction `H _(2) (g) + I _(2) (g) hArr 2 HI (g)`
Equlibrium constant, ` K _(c) = ( [ HI ] ^(2))/( [ H _(2) ] [ I _(2) ]) = ((17 mol L ^(-1)) ^(2))/( ( 5. 0 mol L ^(-1)) ( 3. 0 mol L ^(-1)))= 19. 27`
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