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Investigating Rates of Reaction
Member rating: No Rating | Words: | Submitted: Sun Sep 07 2003
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KS4 Science Assessment Investigating Rates of Reaction The reaction between sodium thiosulphate solution and hydrochloric acid produces a precipitate of sulphur. When first mixed they form a colourless solution, but, as the reaction proceeds, a yellow suspension of sulphur is produced which after some time when sufficient sulphur has been formed, makes the mixture opaque. The reaction for this equation is as follows; The factors I could investigate that would speed up the rate of the reaction are temperature, concentration and the use of a catalyst. I will choose to look at the effects of changing the concentration of a liquid. I can predict that when the concentration of one of the reactants is increased and the concentration of the other stays the same, the rate of the reaction will increase. This is because in a more concentrated liquid, the particles are closer together and more numerous,...
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