Consider the reaction 2 A ⇄ 2 D + E. If K = 5 at Temperature T, which direction will this reaction proceed if [A] = 0.5 M, [D] = 0.5 M and [E] = 0.5 M at temperature T? (Hint, find Q)

2 A ⇄ 2 D + E. If K = 5

Q = (D)^2(E)/(A)^2
Q = (0.5)^2(0.5)/(0.5)^2 = 0.5
Q = 0.5 < K = 5 so reaction will proceed to the right.