0%

DP IB Chemistry: SL

Topic Questions

Home / IB / Chemistry: SL / DP / Topic Questions / 6. Chemical Kinetics / 6.1 Chemical Kinetics / Structured Questions: Paper 2


6.1 Chemical Kinetics

Question 1a

Marks: 2
a)
Describe kinetic theory in relation to energy and temperature.
[2]
    Assess your score
      
    Key Concepts
    Kinetic Theory

    Question 1b

    Marks: 2
    b)
    State what is required for a collision to result in a reaction.
    [2]
      Assess your score
        
      Key Concepts
      Collision theory

      Question 1c

      Marks: 2
      c)
      State the meaning of activation energy (Ea).
      [2]
        Assess your score
          
        Key Concepts
        Activation energy

        Question 1d

        Marks: 1
        d)
        Label the activation energy on the energy profile diagram below.

        6-1-ib-sl-sq-easy-q1d-energy-profile-diagram
        [1]
          Assess your score
            

          Question 2a

          Marks: 3
          a)
          State three ways of monitoring concentration changes in a reaction.
          [3]
            Assess your score
              
            Key Concepts
            Measuring rates

            Question 2b

            Marks: 1
            b)
            A reaction is monitored by measuring the volume of a gas produced every 10 seconds. State an appropriate unit to use.
            [1]
              Assess your score
                
              Key Concepts
              Rate of reaction

              Question 2c

              Marks: 4
              c)
              Sketch a graph to show the volume of gas produced during the course of an experiment against the time taken.
              [4]
                Assess your score
                  
                Key Concepts
                Rate experiments

                Question 2d

                Marks: 1
                d)
                State the effect that increasing concentration has on the rate of a reaction.

                [1]

                  Assess your score
                    
                  Key Concepts
                  Explaining rates

                  Question 3a

                  Marks: 1
                  a)
                  State the effect that increasing temperature has on the rate of a reaction.

                  [1]

                    Assess your score
                      
                    Key Concepts
                    Explaining rates

                    Question 3b

                    Marks: 3
                    b)
                    Sketch a line on the graph to show the same reaction occurring at a higher temperature.
                    6-1-ib-sl-sq-easy-q4d-rate-of-reaction-graph-sketch
                    [3]
                      Assess your score
                        
                      Key Concepts
                      Rate experiments

                      Question 3c

                      Marks: 2
                      c)
                      State two variables that need to be controlled when investigating the effect of temperature on rate in the following reaction:
                      2HCl (aq) + Mg (s) rightwards arrowMgCl2 (aq) + H2 (g)
                      [2]
                        Assess your score
                          
                        Key Concepts
                        Rate experiments

                        Question 3d

                        Marks: 1
                        d)
                        Suggest an appropriate piece of equipment to use to measure the volume of H2 gas produced in the reaction between HCl and Mg.
                        [1]
                          Assess your score
                            
                          Key Concepts
                          Rate experiments

                          Question 4a

                          Marks: 2
                          a)
                          Sketch a line on the potential energy profile diagram to show the pathway for the same reaction, but with a catalyst.

                          6-1-ib-sl-sq-easy-q1d-energy-profile-diagram
                          [2]
                            Assess your score
                              

                            Question 4b

                            Marks: 3
                            b)
                            Explain how catalysts work.
                            [3]
                              Assess your score
                                
                              Key Concepts
                              How catalysts work

                              Question 4c

                              Marks: 2
                              c)
                              A Maxwell-Boltzmann distribution is shown below:
                              6-1-ib-sl-sq-easy-q4c-maxwell-boltzmann-curve
                              i)
                              Draw a line on the Maxwell-Boltzmann curve below to show the effect of adding a catalyst.
                              [1]
                              ii)
                              Shade in the area representing the number of particles that can react with the catalyst present.
                              [1]
                                Assess your score
                                  

                                Question 4d

                                Marks: 3
                                d)
                                Sketch a line on the graph to show the same reaction occurring with a catalyst.

                                6-1-ib-sl-sq-easy-q4d-rate-of-reaction-graph-sketch
                                [3]
                                  Assess your score
                                    
                                  Key Concepts
                                  Rate experiments