Lechatelier's Principle

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Lechatelier

Review and practice equilibrium concepts involving LeChatelier's Priniciple.

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Questions and Answers
  • 1. 
    When more reactant is added into a reaction system at equilibrium, how does the system react to compensate for the stress that is applied?
    • A. 

      More reactant is formed

    • B. 

      There is no change

    • C. 

      More product is formed

  • 2. 
    When the pressure on a gaseous reaction system at equilibrium is increased, the equilibrium will shift...
    • A. 

      In favor of the side with the least gas molecules

    • B. 

      In favor of the side with the most gas molecules

    • C. 

      There will be no change

    • D. 

      To the product side

    • E. 

      To the reactant side

  • 3. 
    For the following reaction, how will the reaction equilibrium be affected by an increase in temperature?H2O2(l) <--> H2(g) + O2(g)    DH = +187 kJ
    Discuss
    • A. 

      It will shift to the right

    • B. 

      It will shift to the left

    • C. 

      There will be no change

  • 4. 
    For the following reaction, how will the reaction equilibrium be affected by an increase in volume?H2O2(l) <--> H2(g) + O2(g)    DH = +187 kJ
    Discuss
    • A. 

      It will shift in favor of the products

    • B. 

      It will shift in favor of the reactants

    • C. 

      There will be no change

  • 5. 
    For the following reaction, how will the reaction equilibrium be affected by the removal of oxygen gas?H2O2(l) <--> H2(g) + O2(g)    DH = +187 kJ
    • A. 

      It will shift to the right

    • B. 

      There will be no change

    • C. 

      It will shift to the left

  • 6. 
    If volume is decreased for the following reaction system at equilibrium, what color will you expect the mixture to become? N2O4(g) + heat <--> 2 NO2(g)colorless                        brown
    • A. 

      Colorless

    • B. 

      Brown

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