Equilibrium Chemical Reaction Quiz Questions

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Equilibrium Quizzes & Trivia

Equilibrium Chemistry


Questions and Answers
  • 1. 
    Which factors must be equal in a reversible chemical reaction at equilibrium?
    • A. 

      The concentrations of the reactants and products

    • B. 

      The potential energies of the reactants and products

    • C. 

      The activation energies of the foward and reverse reactions

    • D. 

      The rates of reaction of the foward and reverse reactions

  • 2. 
    • A. 

      Rate of the foward reaction is greater than the rate of the reverse reaction

    • B. 

      Rate of the reverse reaction in greater than the rate of the forward reaction

    • C. 

      Concentration of the reactants reaches zero

    • D. 

      Concentration of the products remains constant

  • 3. 
    Given the reaction at equilibrium:A(g) + B(g) + heat<----> AB(g)As the pressure increases at constant temperature, the value of the equilibrium constant
    • A. 

      Decreases

    • B. 

      Increases

    • C. 

      Remains the same

  • 4. 
    Which type of reaction is most favored by an increase in temperature?
    • A. 

      Endothermic

    • B. 

      Exothermic

    • C. 

      Spontaneous

  • 5. 
    The equilibrium constant for a given system will change when:
    • A. 

      The temperature changes

    • B. 

      The reactant concentration changes

    • C. 

      The pressure changes

    • D. 

      A catalyst is added

  • 6. 
    A solution that is at equilibrium must be
    • A. 

      Concentrated

    • B. 

      Dilute

    • C. 

      Saturated

    • D. 

      Unsaturated

  • 7. 
    When is equilibrium reached in a chemical reaction?
    • A. 

      When the forward reaction stops.

    • B. 

      The reverse reaction stops.

    • C. 

      The concentrations of the reactants and products become equal.

    • D. 

      The rates of the forward and reverse reactions become equal.

  • 8. 
    For a system at equilibrium, lowering the temperature will always:
    • A. 

      Increase the rate of the reaction

    • B. 

      Increase the concentrations of the products

    • C. 

      Favor the endothermic

    • D. 

      Favor the exothermic

  • 9. 
    Which change may occur in a reaction system when a catalyst is addded?
    • A. 

      The potential energy of the reactants increases.

    • B. 

      The potential energy of the products increases.

    • C. 

      The point of equilibrium is reached more rapidly.

    • D. 

      The heat of reaction decreased.