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Does Concentration affect the rate of reaction? Sodium thiosulphate experiment Plan:- I must produce a piece of coursework investigating the rates of reaction, and the effect different changes have on them. The rate of reaction is the rate of loss of a reactant or the rate of formation of a product during a chemical reaction. It is measured by dividing 1 by the time taken for the reaction to take place; this is otherwise known as the reciprocal. There are five factors which affect the rate of a reaction, according to the collision theory of reacting particles: Temperature, Concentration (of a solution), pressure (in gases), Surface area (of a solid reactant), and using a catalyst. However, I will go into more detail about these later. I have chosen to investigate the effect concentration has on a reaction. This is because I believe that it is the most practical to investigate - it...

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