Question

Two gases are placed in a sealed flask and allowed to react. Which statement is true about the concentrations of the reactants and products when this closed system reaches dynamic equilibrium? They will be equal and constant. They will be equal but continuously changing. They will not necessarily be equal, and they will be continuously changing. They will not necessarily be equal, but they will be constant.

Answer 1

The correct answer is they will not necessarily be equal, but they will be constant. The change between reactants and products will be going continuously but the concentration is constant.

Answer 2

D. They will not necessarily be equal, but they will be constant.