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Rate of reaction An experiment took place about reacting hydrochloric acid with sodium thiosulphate. Hydrochloric acid is a very strong acid as sodium thiosulphate is a liquid. The table below shows the amount of each solution put in the beaker for the experiment to see which of these 5 experiments will be the most concentrated. Hydrochloric acid (ml) Sodium Thiosulphate (ml) Volume of water (ml) Overall volume (ml) 25 5 20 50 25 10 15 50 25 15 10 50 25 20 5 50 25 25 0 50 As you can see from the table above, the hydrochloric acid is kept constant at 25 ml because we want to find out if sodium thiosulphate has to do with the rate of reaction. To keep the experiment fair, I have added water to the experiment needed so that the overall volume is same for all 5 experiments, because if one beaker has 50ml of overall volume and another beaker has 40ml of solution volume, then we can't find out the rate of reaction. Therefore, we experiment will not...

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