Neutralisation Science

Neutralisation 

Aim:                 To observe a neutralisation  reaction.

Equipment:        A test tube, test tube rack, 1 mol  L-1 Na2CO3 ( sodium                                  carbonate ), 1 mol L-1 HCI ( hydrochloric acid ), dropper or                              dropper bottle, universal indicator solution. 

Method:            1) add approximately 1-2 of ml Na2CO3  and place the test                              tube into the test tube rack. Add 3-5 drops of universal                                    indicator solution. 2) using a dropper bottle, add HCI drop by                            drop. Be careful because adding even a small amount of extra                          acid can mean you'll miss the neutralisation point.  

Observation:     we put universal indicator in a test tube mixed with Ammonium                          hydroxide and we started to get a purple and blue colour. once                          we added the sulfuric acid it began changing colour to a rosy                            red colour... we did the same in a different test tube and got                            an aqua blue.