Changing the speed of a Chemical Reaction
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Changing the speed of a Chemical Reaction Introduction: Hydrochloric acid reacts with Sodium Thiosulphate to make sodium chloride, sulphur dioxide and sulphur. Sulphur appears as a yellow deposit. The Equation for the reaction is: - Sodium Thiosulphate + Hydrochloric acid --> Sodium Chloride + Sulphur dioxide + Sulphur Na2S2O3 + 2HCL --> 2NaCl + SO2 + S Task: To investigate what effect changing the concentration of the Thiosulphate has on the speed with which the sulphur materializes. Prediction: As the concentration of sodium Thiosulphate is increased, I predict that the rate of reaction will also increase. I think this because as the sodium Thiosulphate concentration is increased it will react more quickly with the hydrochloric acid as it is more concentrated there are more sodium Thiosulphate particles so therefore a much more chance of a sodium Thiosulphate particle colliding with a hydrochloric acid particle with enough energy for a reaction to occur and this...


