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Chemistry Investigation An Investigation to find the effect of changing the concentration and the rate of reaction between Sodium Thiosulphate solution and Hydrochloric acid. Aim: The aim of this investigation is to determine the effect of changing the concentration sodium thiosulphate on the rate of reaction between Sodium thiosulphate solution and hydrochloric acid. Scientific Knowledge: Reactions can go at all sorts of rates and one of the slowest rates of reactions is rusting of iron. One of the fastest rates of reactions is an explosion when the rate is a fraction of a second. In our lives, we occasionally want to alter the rate of reaction. When we put milk into the refrigerator, we are slowing down the rate at which the milk turns sour. Industrial chemists want to speed up reactions to lower costs and environmental chemists want to slow down reactions that can damage the earth. The rate of reaction is the rate of...

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