Question

Once a chemical reaction has reached equilibrium, which of the following statements is true?

a) The concentration of reactants is at its maximum.
b) The rate of the forward reaction equals the rate of the reverse reaction.
c) The concentration of products continues to increase.
d) The temperature of the system decreases.

Answer 1

The rate of the forward reaction equals the rate of the reverse reaction at equilibrium.

Step-by-step explanation:

b) The rate of the forward reaction equals the rate of the reverse reaction.

Once a chemical reaction has reached equilibrium, the rate of the forward reaction is equal to the rate of the reverse reaction. This means that the forward and reverse reactions are happening at the same rate, and there is no net change in the concentrations of reactants and products. The reaction is said to be at dynamic equilibrium, where the concentrations of all species involved remain constant over time.