## Chemistry: The Central Science (13th Edition)

If Qc $\lt$ K, then that means in order to reach equilibrium, the value of Qc has to increase. K (and also Qc) is the concentration of products raised to their coefficients divided by the concentration of reactants raised to their coefficients - meaning the numerator has the products and the denominator has the reactants. To make Q larger we have to either increase the numerator or decrease the denominator, both of which result from the reaction proceeding to the right