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The equilibrium constant for the reactio...

The equilibrium constant for the reaction `H_(2)+I_(2)hArr 2HI` at 650 K is 40. If 0.5 mole of each of hydrogen and iodine are added to the system at equilibrium, the value of equilibrium constant will be :

A

20

B

60

C

40

D

80

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The correct Answer is:
C
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