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# We are investigating which alcohol is the most effective for producing heat and energy. The alcohols we are investigating are Ethanol, Propan 1-ol, Propan 2-ol, Butan 1-ol and Butan 2-ol.

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Introduction

Alcohol Investigation Aim- we are investigating which alcohol is the most effective for producing heat and energy. The alcohols we are investigating are Ethanol, Propan 1-ol, Propan 2-ol, Butan 1-ol and Butan 2-ol. Diagram- Method- * Weigh alcohol. * Carefully measure out 50ml of water. * Take water temperature. * Measure distance from alcohol to the end of the wick. * Record this data. * Set up apparatus as in the diagram. * Record the temperature of the water every 30 seconds for 300 seconds. * Weigh alcohol again. * Take water temperature. * Measure the distance from alcohol to the end of the wick. * Repeat experiment 3 or 4 times for the up most accuracy. Variables- The main input variables are: * Temperature at start. * Alcohol at the start. * Height of beaker. * Length of wick. * Thickness of wick. * Height of alcohol in burner at the start. * Volume of water. * Beaker. The main output variables are: * Temperature at the end. ...read more.

Middle

I predict that Ethanol will produce the most energy because it produces the least carbon dioxide and water, this means it is smaller therefore it will not take as long to heat. Results: Ethanol Temperature `C Time (s) 1st experiment 2nd experiment Temp. Average 0 19 22 20.5 30 28 30 29 60 35 40 37.5 90 43 50 46.5 120 55 60 57.5 150 66 70 68 180 75 80 77.5 210 83 86 84.5 240 90 92 91 270 96 97 96.5 300 97 98 97.5 The weight of the alcohol at the start of the experiment= 61.81g The weight of the alcohol at the end of the experiment= 59.35g 02.46g=alcohol used The temperature of the water at the end of the experiment= 97`C The temperature of the water at the start of the experiment= 19`C 78`C=Temp. diff. 50*4.2*78=16,380 16,380/2.46=6658.5J of energy used per g of alcohol Propan 1-ol Temperature `C Time (s) 1st experiment 2nd experiment Temp. Average 0 22 27 24.5 30 25 30 27.5 60 27 31 29 90 29 33 31 120 31 35 33 150 32 ...read more.

Conclusion

diff. 50*4.2*43=9030 9030/01.53=5901.9J of energy used per g of alcohol Butan 2-ol Temperature `C Time (s) 1st experiment 2nd experiment Temp. Average 0 21 22 21.5 30 24 24 24 60 29 26 27.5 90 31 29 30 120 36 31 33.5 150 38 35 36.5 180 41 38 39.5 210 42 42 42 240 43 45 44 270 45 48 46.5 300 47 50 48.5 Weight of the alcohol at the start of the experiment= 24.51g Weight of the alcohol at the end of the experiment= 23.42g 1.09g=alcohol used The temperature of the water at the end of the experiment= 48.5`C The temperature of the water at the start of the experiment= 21.5`C 24.5`C=temp. diff. 50*4.2*24.5=5145 5145/01.09=4720.18J of energy used per g of alcohol Conclusion: My graph tells me that my predictions were correct and Ethanol produced the most energy, this is because it has less carbons, therefore will take less time to heat. The alcohol which produced the least energy was Mark Minife ...read more.

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