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Sodium thiosulphate and hydrochloric acid
Member rating: No Rating | Words: | Submitted: Sun Dec 15 2002
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Sodium thiosulphate and hydrochloric acid Planning: Aim: I am measuring the rate of reaction (how fast a reaction takes) of sodium thiosulphate and hydrochloric acid. The rate of reaction is the rate of loss of a reactant or the rate of formation of a product during a chemical reaction. Sodium Thiosulphate + Hydrochloric Acid Na2S2O3 (aq) + 2HCl (aq) Equipment: Sodium thiosulphate (Na S O ) of different concentrations Hydrochloric acid (HCl) Measuring cylinder (x3) Conical flask Stopwatch Method: 1. Measure the right amount of sodium thiosulphate, water and hydrochloric acid into three separate test tubes. Volume as table show: Experiment Sodium thiosulphate (cm3) Water (cm3) 1 10 40 2 20 30 3 30 20 4 40 10 5 50 0 2. Put mixture into conical flask. 3. Add 5cm3 of Hydrochloric acid into the mixture and mix them. 4. Place the mixture on top of a "black cross" (Paper) 5. Start measuring the time as you pull in the Hydrochloric acid. 6. When the mixture has turned sufficiently cloudy so that the letter X can no longer be...
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