Moderate

At equilibrium, the concentrations of reactants and products are:

Correct answer: A. Constant

  • A. Constant
  • B. Different
  • C. Maximum
  • D. Equal

Explanation

Chemical equilibrium is a dynamic state where the rate of the forward reaction equals the rate of the reverse reaction. This results in no net change in the concentrations of reactants and products, so their concentrations remain constant over time.

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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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