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Optimizing Ethanol's Heat Production

Science Fair project presentation
by

Lauren Stiller

on 5 June 2013

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Transcript of Optimizing Ethanol's Heat Production

Optimizing Ethanol's Heat Production Purposes of the Experiment Data The mixture with 95% ethanol and 5% hydrogen peroxide added will produce the most heat and burn the longest. The mixtures with water will not produce as much heat as those with hydrogen peroxide. Materials -360ml ethanol
-20ml hydrogen peroxide
-water
-1 beaker
-thermometer
-timer
-10 ml measuring containerer 95% ethanol and 5% hydrogen peroxide
95% ethanol and 5% water
90% ethanol and 10% hydrogen peroxide
90% ethanol and 10% water
85% ethanol and 15% hydrogen peroxide
85% ethanol and 15% water
80% ethanol and 20% hydrogen peroxide
80% ethanol and 20% water
75% ethanol and 25% hydrogen peroxide
75% ethanol and 25% water

(100% = 50 ml) The purposes of this experiment are:
- To determine whether a mixture of Ethanol and Hydrogen Peroxide will be stable.
-To determine whether this mixture will create a higher amount energy when combusted.
-To evaluate whether this process is safe. Hypothesis Question Which mixture of ethanol and hydrogen peroxide or ethanol and water will be stable, create a higher amount of energy when combusted, and have a safe burning process? Tested Mixtures Procedure 1) 47 ml of ethanol was measured and poured into the beaker.
2) 3 ml of hydrogen peroxide was measured and poured into the beaker; a candy thermometer was also placed into the beaker.
3) The sample was lit on fire with a lighter.
4) The temperature of the sample was recorded every 30 seconds and recorded along with the total time the sample burnt for.
5) After the flame died out, the beaker was rinsed and prepared for the next sample (the same beaker was used for every sample in order to maintain consistent and accurate results).
6) Steps 1-5 were repeated for all of the samples. Sample Measurements 95% = 47 ml
5% = 3 ml
90% = 45 ml
10% = 5 ml
85% = 42 ml
15% = 8 ml
80% = 40 ml
20% = 10 ml
75% = 37 ml
25% = 13 ml Pictures Conclusion My hypothesis was partially correct; the mixtures with ethanol and hydrogen did produce more heat but weren't as stable as those with ethanol and water. The mixtures with ethanol and water did produce less heat and burn for a shorter time. Variables Independent Variable- Amount of ethanol, hydrogen peroxide, and water in each mix
Dependent Variable- Time the mix burns for and how much heat it produces Quick Survey http://www.surveymonkey.com/s/PS79ZLF (Click on the link) A Science Project by Lauren Stiller
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