The Iodine Clock Reaction

Test tubes                                                 Potassium Iodide   500ml                   Hydrogen peroxide 6ml to 500ml DW      Sodium Thiosulfate 0.62ml to 250DW

                                                                                                               100Vol= 30% = 0.3 M 12mls of 100Vol to 1L = 0.1 M (100Vol=8.3M =30%) 

Stock bottle of iodine                                                          Sulfuric acid 0.5M                                                          Distilled water

                                                                                                                                                  Starch                                                                   stop-clock