Which of the following best defines a dynamic equilibrium in a closed chemical system?
CHEMISTRY · Single correct · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)
Problem
Which of the following best defines a dynamic equilibrium in a closed chemical system?
(a) The concentrations of reactants and products are equal, so the reaction effectively stops.
(b) Both forward and reverse reactions continue, but the forward reaction proceeds slightly faster, so concentrations change slowly over time.
(c) The forward and reverse reaction rates are equal, so macroscopic concentrations remain constant while molecular collisions continue.
(d) The forward reaction has ceased, but the reverse reaction proceeds at the rate it originally did, maintaining constant concentrations.