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I am to investigate the factors that affect the rate at which Sodium Thiosulfate (Na2S2O3) reacts with Hydrochloric Acid (HCl).
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Sodium Thiosulfate I am to investigate the factors that affect the rate at which Sodium Thiosulfate (Na2S2O3) reacts with Hydrochloric Acid (HCl). When sodium thiosulfate is mixed with hydrochloric acid, a reaction takes place, leading to a precipitate of sulphur being formed. This turns the solution cloudy. I shall use this clouding to investigate a factor that affects the rate of reaction, the factor being temperature. To do this, I shall react Sodium Thiosulfate with Hydrochloric Acid at a range of temperatures, between 20?C and 40?C, at 5?C intervals, leading to 5 results. The experiment shall be carried out twice, to give accuracy, and allowing me to check for agreement between results. I predict that as the temperature that the reaction takes place at increases, the less time it will take for the reaction to take place and for the solution to cloud. My prediction is based on the collision theory, which says that *...
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