The equilibrium constant, KcKc, for the reaction of iodine bromide to form iodine and bromine is 2.5×10−32.5×10−3. If an equilibrium mixture contains 0.33 M IBrM IBr and 4.3×10−24.3×10−2 M I2M I2, what is the molar concentration of Br2Br2? 2IBr(g)⇌I2(g)+Br2(g)2IBr(g)⇌I2(g)+Br2(g)

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