Having a large value of equilibrium constant Keq tells us the equilibrium shifts towards left or right ?


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The position of the reaction at equilibrium  whether it lies to the left or the right depends on the relative amounts of product and reactant at equilibrium. If the reactants dominate and the reaction lies to the left, K is small because the denominator of the equilibrium constant - the bottom line of the expression for K - dominates over the numerator - the top line.

However , if the products dominate and the reaction lies to the right, because the numerator dominates over the denominator the result would be a larger number and K is large .


If Keq is large the equilibirum lies to the right .