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Find the rate of reaction between thiosulphate and hydrochloric acid at different temperature.
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GSCE Chemistry Investigation Plan: Aim: The aim of my investigation is to find the rate of reaction between thiosulphate and hydrochloric acid at different temperature. Background: Dilute hydrochloric acid reacts with sodium thiosulphate to give a precipitate of sulphur: Na2S2 O3(aq) + 2HCl(aq) 2NaCl(aq) + H2O(l) + SO2(aq) + S(s) Prediction: I predict that the higher the temperature is the quicker the reaction will be. This is because the heat gives the particles more kinetic energy causing the particles to move faster and have more energy to react. When temperature increases then the average energy of particles increases and the number of particles which have the activation energy increases. Activation energy is when particles collide with sufficient energy to react. The proportion of collision that occurs at the activation energy also increases. Also higher temperature means that there is a high percentage of successful collisions and are more likely to collide. A Fair Test: The independent variable is the temperature...
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