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Rates of reaction in a sodium thiosulphate and hydrochloric acid solution
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| Submitted: Thu Jul 11 2002
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Rates of reaction in a sodium thiosulphate and hydrochloric acid solution Aim: - To investigate the effects of changes in concentration of sodium thiosulphate on the rate of its reaction with hydrochloric acid. The word equation of the reaction is: - Sodium Thiosulphate + Hydrochloric Acid ==> Sodium Chloride + Water + Sulphur Dioxide + Sulphur Na2S2O3 (aq) + 2HCl (aq) ==> 2NaCl (aq) + H2O (l) + SO2 (g) + S (s) The experiment will be carried out changing the concentration of ST while keeping all other factors as constant as possible e.g. the concentration of HA will be constant. Both the sodium thiosulphate and the Hydrochloric acid are soluble in water, so the concentration of either could be changed. However, I have chosen to vary the concentration of sodium thiosulphate, as it is more widely available in different concentrations. The temperature of the surroundings will be as constant as possible, at room temperature, and will not be monitored during...
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