In order to determine if a reaction is at equilibrium which of the following must be true?

Question

Quizplus · Accepted Answer

At equilibrium, the rates of the forward and reverse reactions are equal, meaning that no further changes in concentrations occur. However, the concentrations of the reactants and products may not necessarily be equal, and the concentration of the products is not required to be greater than the reactants, as stated in options A and B. Option C, that the forward and reverse reactions have stopped, is not the best answer, as they may be still ongoing but with equal rates. Therefore, the best choice is D, where the rate of the forward and reverse reactions are equal, indicating that the equilibrium has been achieved.

In Order to Determine If a Reaction Is at Equilibrium