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Predicting the direction of a reaction by comparing Q and K.
The relative magnitudes of the reaction quotient Q
and the equilibrium constant
indicate how the reaction mixture changes as it moves toward equilibrium.
is smaller than K
reaction proceeds from left to right until Q
, the reaction is at
equilibrium and has no tendency to change.
is larger than K
, the reaction proceeds from right
to left until Q
Effect of adding H2 to an equilibrium mixture of N2,
is added to an
equilibrium mixture of N2
, and NH3
a portion of the H2
to form NH3
thereby establishing a new equilibrium position that has the same equilibrium
The results are shown in accordance
with Le Châtelier’s