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I aim to investigate the affect of temperature on the rate of reaction between sodium thiosulphate and hydrochloric acid.
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GCSE Coursework: Chemistry Planning I aim to investigate the affect of temperature on the rate of reaction between sodium thiosulphate and hydrochloric acid; Sodium thiosulphate + hydrochloric acid › sodium chloride + water + sulphur dioxide + sulphur Na2S2O3(aq) + 2HCl(aq) › 2NaCl(aq) + H2O(l)+ SO2(aq) + S(s) The input variables which might affect the outcome if the investigation are the concentration levels and temperature, whilst only investigating the temperature and keeping the concentration levels the same. The output variables I intend to measure are time (s), and the rate of reaction, 1/time (s-1). I will measure the output variables with a stopwatch, timing to see how long it takes for the solution to turn cloudy. I predict that the higher the temperature, the more quickly reaction will occur. This is because with heat, the particles of sodium thiosulphate and hydrochloric acid have more energy and this obviously causes them to move around more. It works like...
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