Gaseous hydrogen iodide is placed in a closed containerat 425 °C, where it partially decomposes to hydrogen andiodine: 2 HI(g) ⇌ H2(g) + I2(g). At equilibrium it isfound that [HI] = 3.53 x 10-3 M, [H2] = 4.79 x 10-4 M,and [I2] = 4.79 x 10-4 M. What is the value of Kc at thistemperature?

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