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An Investigation into the effect that the concentration of Hydrochloric Acid has on a reaction with Sodium Thiosulphate.
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An Investigation into the effect that the concentration of Hydrochloric Acid has on a reaction with Sodium Thiosulphate In this investigation I aim to see how the change in concentration of hydrochloric acid affects its rate of reaction with Sodium Thiosulphate. I will do this by measuring the time it takes for a cross to placed under a conical flask to 'disappear' due to a precipitate being formed by the sulphur. The chemical equation of the reaction we are doing is: Sodium Thiosulphate + Hydrochloric Acid --> Sodium Chloride + Water + Sulphur Dioxide + Sulphur Na2S2O3 (aq) + 2HCl (aq) --> 2NaCl (aq) + H2O (l) + SO2 (g) + S (s) Variables Just for a reaction to take place molecules have to collide with each other with sufficient energy to take place (collision theory), there are many different things that can make the rate of reaction between chemical substances alter. The following variables...
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