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Investigate how the concentration of sodium thiosulphate solution affects the rate of reaction between it and hydrochloric acid.
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Chemistry Coursework - Rate of Reaction Aim To investigate how the concentration of sodium thiosulphate solution affects the rate of reaction between it and hydrochloric acid. Hypothesis I predict that with an increase in concentration of sodium thiosulphate will come an increase in reaction rate. I base my prediction on the collision theory, a successful collision being when two particles collide such that they react with one and other. I have chosen to investigate how concentration affects reaction rate, there are three other aspects which can also effect rate of reaction. * Temperature - The higher the temperature the more energy is gained by particles and so the faster they collide * Particle size (surface area) - The larger the surface area the more exposure to the reactant and so the faster the reaction * Catalysts - A catalyst lowers the activation energy of a substance, meaning particles gain more energy and so move faster, and collide...
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