Question 13 of 21 Which of the following characterizes a reaction at equilibrium? A. The forward reaction stops, and the backward reaction starts. B. The reactants are changed into products. C. The forward and backward reactions stop happening. D. The forward and backward reactions are equal.

A reaction at equilibrium is like a perfectly balanced seesaw; both sides are equally active! The forward and backward reactions occur at the same rate, meaning the concentration of reactants and products remains steady over time. It's an ongoing dance where neither side wins! In practical terms, a great example of equilibrium can be seen in the formation of carbonic acid in sodas. When you open a can, carbon dioxide escapes, disrupting the equilibrium. However, once mixed, the system strives to reach a new balance between soda, CO₂, and carbonic acid for that fizzy experience. Cheers to equilibrium!