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The Rate of Reaction Between Sodium Thiosulphate Solution and Dilute Hydrochloric Acid.
Member rating: No Rating | Words: | Submitted: Thu Jul 11 2002
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Introduction I have been asked to investigate one factor that affects the rate of reaction between Sodium Thiosulphate solution and dilute Hydrochloric Acid. The reaction Sodium Thiosulphate is a solution made up Sodium, Sulphur and Oxygen. Equation: Na2S2O3 Dilute Hydrochloric Acid is an acid containing Hydrogen and Chlorine. Equation: 2HCl When Sodium Thiosulphate is mixed with dilute Hydrochloric Acid a reaction occurs. This reaction forms a precipitate of yellow sulphur as one of the products. This precipitate can be used to measure the rate of this reaction. Equation: Sodium + Hydrochloric › Sulphur + Sodium + Sulphur + Water Thiosulphate Acid chloride Dioxide Na2S2O3 (aq) + 2HCl (aq) › S (s) + 2NaCl (aq) + SO2 (g) + H2O Uses of Sodium Thiosulphate Sodium Thiosulphate is used for: 1. Developing photographs 2. Titration of iodides Factors affecting the Rate of Reaction There are five factors that affect the rate of a reaction: 1. Particle Size: For a chemical reaction takes place between a solution and a solid there needs to be a collision...
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