Which happens when a reversible reaction reaches a state of chemical equilibrium? A. The system runs out of reactant particles.

B. The concentrations of reactants and products are equal.

C. The activation-energy barrier is eliminated.

D. The rates of forward and reverse reactions are equal.​

Which action would reduce the activation energy of a chemical reaction? a. adding a catalyst to the reaction b. adding more reactants to the reaction vessel c. lowering the potential energy of the products d. lowering the potential energy of the reactants e. raising the temperature of the reaction