Which of the following statements correctly identifies a defining characteristic of a…
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 statements correctly identifies a defining characteristic of a chemical system that has reached dynamic equilibrium in a closed container at constant temperature?
(a) The forward and reverse reaction rates decrease to zero, so the system becomes static.
(b) The forward and reverse reaction rates are equal, so no net change in concentrations occurs.
(c) The concentrations of reactants and products remain constant because they are equal at equilibrium.
(d) The equilibrium constant becomes K=1, indicating equal amounts of reactants and products.