Question: (a) At 1285 oC the equilibrium constant for the reaction Br2(g) 2 Br(g) is Kc = 1.04 Ã 10-3 is . A 0.200-L vessel containing

(a) At 1285 oC the equilibrium constant for the reaction Br2(g) 2 Br(g) is Kc = 1.04 Ã— 10-3 is . A 0.200-L vessel containing an equilibrium mixture of the gases has 0.245 g Br2(g) in it. What is the mass of Br(g) in the vessel?
(b) For the reaction H2(g) + I2(g) 2 HI(g), Kc = 55.3 at 700 K. In a 2.00-L flask containing an equilibrium mixture of the three gases, there are 0.056 g H2 and 4.36 g I2. What is the mass of HI in the flask?

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