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An experiment to investigate the factors controlling the rate of the sodium thiosulphate / acid reaction.
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An experiment to investigate the factors controlling the rate of the sodium thiosulphate / acid reaction. Planning I am investigating the factors controlling the rate of thiosulphate / acid reaction. The reaction that will be taking place will follow the rate at which sulphur is formed in the reaction of sodium thiosulphate with dilute hydrochloric acid. In the experiment the sulphur will appear as an extremely fine precipitate. This will slowly be followed by a milky appearance in the reaction mixture in the conical flask. As the amount of the sulphur in the mixture increases, the precipitate will become milkier. Gradually the liquid will become more and more opaque. To investigate the rate of the reaction, we will use the cross idea. A cross will be placed under the conical flask and when it cannot be seen anymore, because the liquid is opaque, I will know that the reaction...
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