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The aim of this coursework is to investigate the rate of reaction between sodium thiosulphate solutions and dilute hydrochloric acid.
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GCSE CHEMISTRY COURSEWORK Aim The aim of this coursework is to investigate the rate of reaction between sodium thiosulphate solutions and dilute hydrochloric acid. Introduction In this investigation, I am going to be looking at the reaction between sodium thiosulphate and hydrochloric acid. When they react, a yellow precipitate of sulphur is formed. The diagram below shows the different stages of the reaction taking place. This reaction can be timed by measuring how long it takes the precipitate to make the mixture opaque. Solutions are mixed together Precipitate is formed Solution is now opaque The word equation and formula for this reaction is: Na2S2O3 (aq) + 2HCl (aq) ? 2NaCl (aq) + S (s) + SO2 (g) + H2O (l) sodium thiosulphate + hydrochloric acid ? sodium chloride + sulphur + sulphur dioxide + water Rate of Reaction The rate of reaction is the speed of the reaction between two particles. It is how quickly a reaction...
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