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Sodium Thiosulphate Reaction Plan This investigation is about rates of reaction and what affects them. In my experiment I am going to look at hydrochloric acid and sodium thiosulphate which is a precipitation reaction. They react together as shown in the equations below: Sodium thiosulphate + hydrochloric acid --> sodium chloride + sulphur + sulphur dioxide + water Na2S2O3(aq) + 2HCl(aq) --> 2NaCl(aq) + S(s) + SO2(g) + H2O(l) A reaction occurs when particles of the reactants meet and combine; this is called the collision theory. To increase the rate of reaction it is necessary to cause more particles to collide harder/at more speed and make it happen more often. There are several ways to do this and these make up the variables for this experiment. Two examples of reactions are Rusting and a bomb exploding. Rusting is an example of a very slow chemical reaction between Oxygen and (a liquid) most commonly Water on Iron,...

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