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Alcohol Energy Release

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Introduction

GCSE Chemistry Coursework 1 Planning a. I intend to investigate the factors, which affect the energy released by measuring the temperature change of water by the burning of different alcohols. For example, does the type of alcohol make a difference? b. The input variables I have identified are type of alcohol, size of wick, distance of wick to bas of calorimeter, amount of soot on calorimeter, amount of water in calorimeter. c. I will use temperature as my outcome variable by measuring the temperature at set time intervals d. I predict that the different types of alcohol will affect the temperature change (energy released) ...read more.

Middle

I will try to choose spirit burners with similar sized wicks so as to avoid a second variable altering the reactions. I will place a thermometer into the calorimeter and after the flame has been lit, I will check the temperature every 30 seconds to get a reading I will do this to a maximum of 4 minutes. g. I will ensure a fair test by doing my best to keep all other variables the same, other than temperature in each experiment. I will also repeat each experiment (and take the average) twice so that if a mistake occurs, I hope my second result will show me and help me right it. h. ...read more.

Conclusion

2. Obtaining results Time Heptanol Butanol Pentanol Ethanol Propanol 1st Result 2nd Result 1st Result 2nd Result 1st Result 2nd Result 1st Result 2nd Result 1st Result 2nd Result 30 27 26 28 27 26 27 25 25 23 23 60 38 36 36 35 31 30 30 29 25 26 90 43 42 44 45 40 39 37 36 28 29 120 51 51 54 56 47 48 45 46 31 32 150 59 59 65 65 56 57 54 54.5 38 32 180 63 62 76 75 65 60 62 61 42 33 210 65 66 83 82 73 64 70 70 47 31 240 73 72 87 86 81 66 77 76 50 29 b. c. ... = odd result. 3. Analysing Results and Making conclusions ...read more.

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