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To find how much energy is released when different alcohols are burnt.

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Introduction

Aim To find how much energy is released when different alcohols are burnt. Prediction I predict that there will be more energy released when ethanol is burnt because it is a very flammable substance. Equipment Spirit burners, thermometer, tin can, clamp stand, goggles, Ethanol, Propanol, Butanol, Pentanol, Hexanol. ...read more.

Middle

After the temperature has risen by 50�C we will re weigh the burner and record how much alcohol was used. We will repeat this for all 5 alcohols. Fair test I will keep this a fair test by keeping the amount of water the same for each alcohol and keeping the tin can the same distance from the burner for each one. ...read more.

Conclusion

Final Temp of water (�C) Rise in temp (�C) Mass of water being heated (g) Mass of burner and alcohol at start (g) Mass of burner and alcohol at end (g) Mass of alcohol used (g) Ethonal 19 69 50 100 118.30 114.43 3.87 Propanol 22 72 50 100 160.46 158.21 2.25 Butanol 19 69 50 100 137.30 135.23 2.07 Pentanol 19 69 50 100 122.59 120.38 2.21 Hexanol 20 60 50 100 138.91 137.47 1.44 ...read more.

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