An empty 2 Liter flask is filled with: 1.705 atm of CO(g), 0.900 atm of COBr2(g), and 1.895 atm of Br2(g), at 260°C and allowed to reach equilibrium according to the reaction:

Question

COBr2(g) ⇄ CO(g) + Br2(g)

Kp = 0.289 at 260°C Calculate the value of Q and determine which direction this reaction will proceed to reach equilibrium.

Answer 1

COBr₂(g) <==> CO(g) + Br₂(g)

0.9......................1.705......1.895.......I

Q = (CO)(Br₂) / (COBr₂) = (1.705)(1.895) / (0.9)

Q = 3.59

Because Q is greater than K, the reaction will proceed to the left, toward the reactant side