ACS Chemistry Practice Exam 2025 – The All-in-One Guide to Exam Success!

A larger equilibrium constant, often represented as Keq, indicates a greater concentration of products compared to reactants at equilibrium. This means that when the value of Keq is high, the reaction favors the formation of products, indicating that more product molecules are present when the system reaches equilibrium.

For instance, if Keq is significantly greater than 1, it signifies that at equilibrium, the concentration of products is much higher than that of reactants. This is a direct reflection of the extent to which the reaction proceeds towards products before it reaches a state where the rates of the forward and reverse reactions are equal.

In scenarios where Keq is less than 1, it would imply that the equilibrium position lies towards the reactants, which is not the case when discussing a larger Keq value. The other options touch on different aspects of chemical equilibrium that do not directly correlate with the implication of a large Keq value. Thus, the relationship between the size of the equilibrium constant and product formation is a fundamental concept in chemical thermodynamics.