Page 444 - SUBSEC October 2017_Neat
P. 444

- 6 -



                    (d)    Draw the fully displayed structural formula of the organic product formed when dopamine
                           is treated with ethanol in the presence of concentrated sulphuric acid and refluxed.        DO NOT WRITE IN THIS AREA


































                                                                                                   [2 marks]           DO NOT WRITE IN THIS AREA

                    (e)    Dopamine is subjected to chemical analysis and some of the results are presented in
                           Table 1 below.  Complete Table 1 by writing the missing test, observation and inference.

                           TABLE 1:  RESULTS OF CHEMICAL ANALYSIS OF DOPAMINE


                           Test                        Observation                      Inference


             PCl  or PCl  is added to dopamine. •                            •
                 3     5








             •                               White  crystals are produced on  •
                                             heating.                                                                  DO NOT WRITE IN THIS AREA








                                                                                                   [5 marks]


                                                                                GO ON TO THE NEXT PAGE
              02212020/CAPE/SPEC 2017
                                                       ‘‘*’’Barcode Area”*”
                                                       Sequential Bar Code
   439   440   441   442   443   444   445   446   447   448   449