What characterizes a dynamic equilibrium system?

What characterizes a dynamic equilibrium system?

• A. Rates of forward and reverse reactions are equal.
• B. All reactants have been consumed.
• C. Only products remain.
• D. The reaction stops completely.

Answer: (A)

Dynamic equilibrium happens when the forward and reverse reactions occur at the same rate. Because the two directions balance, the concentrations of both reactants and products stay constant over time, even though molecules are still reacting at the microscopic level. This is what makes the system dynamic rather than stopped or completed. The forward rate equaling the reverse rate means there is no net change, not that the reactions have ceased or that only products remain or all reactants are gone.

Dynamic equilibrium happens when the forward and reverse reactions occur at the same rate. Because the two directions balance, the concentrations of both reactants and products stay constant over time, even though molecules are still reacting at the microscopic level. This is what makes the system dynamic rather than stopped or completed. The forward rate equaling the reverse rate means there is no net change, not that the reactions have ceased or that only products remain or all reactants are gone.