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How does the concentration of sodium thiosulphate solution affect the rate of its reaction with hydrochloric acid?
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Helen Bewick 10C How does the concentration of sodium thiosulphate solution affect the rate of its reaction with hydrochloric acid? During this investigation I hope to find out if the concentration of sodium thiosulphate solution affects the rate of its reaction with hydrochloric acid. I will do this by reacting hydrochloric acid and different dilutions of sodium thiosulphate solution and working out their rates of reaction. Prediction The higher the concentration of sodium thiosulphate solution the faster the rate of it's reaction will be and the less amount of time it will take to react with hydrochloric acid. The collision theory states that in a higher concentration there is a larger amount of particles in a given volume so there will be a more likely chance of successful collisions and the rate of reaction will increase. Lower concentration Higher concentration Key -Sodium thiosulphate molecule - H20 molecule I also predict that as the concentration doubles the rate of...
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