The initial concentrations of BrCI, Br2, and Cl2 in a certain mixture are 0.0200

Question

The initial concentrations of BrCI, Br2, and Cl2 in a certain mixture are 0.0200 M, 0.0100 M, & 0.0100 M, respectively. What will be the concentrations of these gases when the system reaches equilibrium at 1000 K? What is the total pressure of the gas mixture at equilibrium? At the beginning of this experiment, is the forward reaction spontaneous? What are the two quantities that would support your answer? At the beginning of this experiment, is the forward reaction spontaneous? What are the two quantities that would support your answer?

Explanation / Answer

2BrCl -----> Br2 + Cl2 0.02 0.01 0.01 0.02 - 2x 0.01+x 0.01+ x Kc = (0.01+x)^2/(0.02-2x) Kc = 4.84 solving for x we get x = 9.9588x 10^-3 [BrCl] = 8.23 x 10^-5 M [Br2] = 0.0199588 M [Cl2] = 0.0199588 M

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