Which of the following is not the characteristic feature of dynamic equilibrium?
Correct answer: B. It is only achieved in an open system
- A. It is characterized by constant macroscopic property
- B. It is only achieved in an open system
- C. It can be obtained in either direction
- D. It can be achieved in closed system
Explanation
Dynamic equilibrium is only achieved in closed systems because closed systems do not allow for the exchange of matter with the surroundings. In a closed system, the reactants and products are trapped inside the system, so the only way for the equilibrium to be achieved is for the forward and reverse reactions to occur at the same rate. This means that the concentrations of the reactants and products will remain constant over time.In an open system, however, the reactants and products can be exchanged with the surroundings. This means that the concentrations of the reactants and products can change over time, as the system adjusts to the changes in the surroundings. As a result, dynamic equilibrium can be achieved in an open system, as the forward and reverse reactions will continue to occur, but the concentrations of the reactants and products will not remain constant.
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About Chemical Equilibrium
Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.
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