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An experiment to find the rate of reaction between two liquids Introduction This is an experiment to determine the effect of changing the concentration of sodium thiosluphate (Na S O (aq)) on the rate of reaction between sodium thiosulphate and hydrochloric acid (HCL (aq)). HCl+sodium thiosulphatesodium chloride+sulphur dioxide+sulphur+water. HCl(aq) + Na2S2O3(aq) NaCl(aq) + SO2(g) + S(s) + H2O(l) If one were to place hydrochloric acid and sodium thiosulphate into a beaker a white cloudy solution is left in the beaker. The rate of the reaction can be controlled by concentrating one of the liquids, or one could add water to dilute the mixture to slow the reaction. Method Apparatus Two beakers of 50cm3 Sodium Thiosulphate Hydrochloric acid Conical flask Measuring tube-10cm3 Measuring tube-50cm3 The apparatus is set up as shown above. I will place 50cm3 of Sodium Thiosulphate; I will keep Hydrochloric acid at a constant rate of 5cm3. Then I will reduce the sodium thiosulphate and increase the water,...

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