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Sodium Thiosulphate and hydrochloric acid

You are going to investigate the reaction between hydrochloric acid and sodium Thiosulphate whose rate depends on temperature. You can repeat this experiment at several temperatures: 20^oC, 30^oC, 40^oC, 50^oC and 60^oC.

To measure whether the reaction takes place, you can use a Light sensor or a Colorimeter. This Logbook can measure the absorption and so, the turbidity of the solution. On the left column, you will see the instructions to carry out the experiment with the Light sensor and on the right one, with the Colorimeter.

View and/or download the worksheet but please do not use this document inappropriately

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View and/or download the Datadisc file examples of this investigation

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    With the Light sensor:   20ºC            

                                            30ºC

                                            40ºC

                                            50ºC

                                            60ºC

                                            rate against temperature

    With the Colorimeter:   20ºC            

                                            30ºC

                                            40ºC

                                            50ºC

                                            60ºC

                                            rate against temperature

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