Equilibrium in Reversible Reactions
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Questions and Answers

Which statement correctly describes the concept of dynamic equilibrium in a chemical reaction?

  • The concentrations of reactants and products fluctuate significantly over time.
  • A catalyst is necessary for reaching equilibrium.
  • The reaction only proceeds in one direction.
  • The rates of the forward and backward reactions are equal, resulting in constant concentrations. (correct)
  • What happens to the position of equilibrium when pressure is increased in a reaction?

  • It shifts to the side with the least number of molecules. (correct)
  • It remains unchanged as pressure does not affect equilibrium.
  • It always shifts to the left, regardless of the number of molecules.
  • It shifts toward the side with the greater number of gas molecules.
  • How does increasing temperature affect the position of equilibrium in an endothermic reaction?

  • It shifts the equilibrium toward the products. (correct)
  • It shifts the equilibrium equally in both directions.
  • It has no effect on the position of equilibrium.
  • It shifts the equilibrium toward the reactants.
  • Which of the following is a consequence of completing a reversible reaction?

    <p>The reaction can achieve a state where both reactants and products are present in constant concentrations.</p> Signup and view all the answers

    Which statement correctly distinguishes between the rate and position of equilibrium?

    <p>The rate of reaction refers to how fast equilibrium is reached, while position indicates the concentrations at equilibrium.</p> Signup and view all the answers

    Study Notes

    Equilibrium in Reversible Reactions

    • Reversible reactions can reach dynamic equilibrium in a sealed container
    • Forward and backward reactions occur at the same rate
    • Reactant and product concentrations remain constant

    Factors Affecting Equilibrium

    • Temperature changes:

      • Increasing temperature shifts the equilibrium position towards the endothermic reaction
      • Decreasing temperature shifts the equilibrium position towards the exothermic reaction
    • Pressure changes:

      • Increasing pressure shifts the equilibrium position towards the side with fewer molecules
      • Decreasing pressure shifts the equilibrium position towards the side with more molecules

    Catalysts

    • Catalysts have no effect on the position of equilibrium
    • Catalysts only affect the rate of reaction, not the position of equilibrium

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    Description

    Explore the concepts of dynamic equilibrium in reversible reactions and the factors that affect it. This quiz covers how temperature and pressure changes influence the equilibrium position, as well as the role of catalysts. Test your understanding of these critical principles in chemical reactions.

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