Page 382 - SUBSEC October 2017_Neat
P. 382

- 9 -


    DO NOT WRITE IN THIS AREA
                           (v)    Write the cell diagram.

                                  .................................................................................................................................
                                  .................................................................................................................................
                                                                                                    [1 mark]

                           (vi)   Write the equation to represent the cell reaction.

                                  .................................................................................................................................

                                  .................................................................................................................................
                                                                                                    [1 mark]


                    (b)    Use the E  value for each electrode (in the data booklet) to determine the E  cell.  Does
                                    ɵ
                                                                                                 ɵ
                                                                                     ɵ
                           your calculated value concur with the measured value of E  cell = 1.10V given on
    DO NOT WRITE IN THIS AREA
                           page 8?
















                           .............................................................................................................................................
                                                                                                   [2 marks]

                    (c)    Suggest TWO changes which could be made to the cell in (a) to cause the cell potential
                           to be greater than 1.10V.
    DO NOT WRITE IN THIS AREA
                           ..............................................................................................................................................

                           .............................................................................................................................................

                           ..............................................................................................................................................

                           .............................................................................................................................................

                           ..............................................................................................................................................

                           .............................................................................................................................................
                                                                                                   [2 marks]










                                                                              GO ON TO THE NEXT PAGE
              02112020/CAPE/SPEC 2017
                                                       ‘‘*’’Barcode Area”*”
                                                       Sequential Bar Code
   377   378   379   380   381   382   383   384   385   386   387