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Experiment to investigate the factors that affect the rate of reaction between sodium thiosulphate and hydrochloric acid.
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Experiment to investigate the factors that affect the rate of reaction between sodium thiosulphate and hydrochloric acid Introduction When sodium thiosulphate and hydrochloric acid react they produce a cloudy precipitate. The two chemicals are both clear solutions and will react together to form a yellow precipitate of sulphur, the equation for which is as follows: Na2S2O3 + 2HCl = 2NaCl + SO2 + S + H2O As the solution will turn cloudy, we can observe the rate of reaction by placing a black cross underneath the beaker and seeing how long it takes for it to disappear. There are factors that affect this experiment such as temperature, concentration and time. I do not think that surface area will affect the experiment, as both chemicals are liquids. For my experiment I will study concentration as this is easily observed and can be easily varied. I think that as the concentration of sodium thiosulphate increases, the amount of time...
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