Consider the following equilibrium:

(a) A 0.50 mol sample of COBr₂ is transferred to a 9.50-L flask and heated until equilibrium is attained. Calculate the equilibrium concentrations of each species.
(b) The volume of the container is decreased to 4.5 L and the system allowed to return to equilibrium. Calculate the new equilibrium concentrations.
(c) What is the effect of decreasing the container volume from 9.50 L to 4.50 L?

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COBr₂(g) → CO(g) + Br₂(g) Kc = 0.190 at 73 °C