Page 381 - SUBSEC October 2017_Neat
P. 381

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                                                      MODULE 2

                                             KINETICS AND EQUILIBRIA


             2.     A student is attempting to find the cell potential of a Daniell (Zn/Cu) cell.

                    (a)     (i)   Outline the steps he has to follow to obtain a reading of approximately 1.10 V on    DO NOT WRITE IN THIS AREA
                                  his voltmeter.

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                                                                                                   [5 marks]

                           (ii)   Write the ionic equation for the reaction occurring at EACH of the electrodes.

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                                                                                                   [2 marks]

                           (iii)   Identify the anode and the cathode.

                                  Anode:  ....................................................................................................................


                                  Cathode: .................................................................................................................  DO NOT WRITE IN THIS AREA
                                                                                                    [1 mark]


                           (iv)   Explain the direction of electron flow.
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                                                                                                    [1 mark]

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