How does the concentration of Sodium thiosulphate solution affect the rate of its reaction with hydrochloric acid?
… there is a much lower concentration of sodium thiosulphate particles to react with the hydrochloric acid,) then there is less chance of the particles colliding and reacting as there are less particles in the given volume, so the reaction time will slowly lengthen as the concentration goes down. My graphs should hopefully look like this. Plan Factors to control I shall have to control as many aspects of the experiment as possible, to make it a fair test. I shall make sure the total volume of the solution stays the same. I shall do this by reducing the volume of sodium thiosulphate as I add water, the total volume of the sodium thiosulphate solution and water will be 50cm3. An example would be having 30cm3 of sodium thiosulphate and having 20cm3 of water, added together their volume is 50cm3. I shall do this because if I did not then the total volume would go up …
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