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G.C.S.E Chemistry coursework: Investigating the effect of temperature on the rate of reaction between sodiumthiosulphate and hydrochloric acid

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Introduction

Tuesday 18th may 2004 Gurjant Rai G.C.S.E Chemistry coursework Investigating the effect of temperature on the rate of reaction between sodium thiosulphate and hydrochloric acid Planning My coursework for G.C.S.E Chemistry will be based on the rate of reaction. I will be investigating the effect of temperature on the rate of reaction and will analyze the reaction between sodium thiosulphate and hydrochloric acid at different temperatures to see the effect of heat. I will be reacting sodium thiosulphate with hydrochloric acid at different temperatures. I will place 50cm3 of sodium thiosulphate and 5cm3 of hydrochloric acid in one conical flask. ...read more.

Middle

Preliminary work A pretest will be needed in order to get the feel of what the experiment will be about. The pretest will help me make decisions on what equipment I will be using to do the experiment. The pretest will also help me to see what sort of problems I might face. The pretest will also show me what kind of results I will need when I do the experiment a second time. I will also see what I need to do to make the experiment a fair test and the pretest will also give me a good procedure for the real experiment. ...read more.

Conclusion

cool it down by a couple of degrees, so if I needed the temperature to be 34 oC I would have to heat it to 36 oC, this was a problem I had while doing the pretest. Another problem I had was when I heated the sodium thiosulphate it got heated too much so I had to wait for it to cool down; when I do the experiment again I will ask for some ice to cool it down faster. I predict that if I do the experiment again at 44 oC the time taken will be about 6 seconds half of the last result I got. Apparatus diagram Page 2 ...read more.

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