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Comparing the enthalpy change of combustion of alcohols down a homologous series.
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Comparing the enthalpy change of combustion of alcohols down a homologous series Aim The aim of this investigation is to discover what effect of increasing the length of the carbon chain in an alcohol has on the energy produced. To investigate this, the enthalpy of combustion will be calculated, by burning the fuels and heating a measured volume of water. Preliminary Investigation A preliminary investigation was carried out in order to show any weaknesses in the method that is used for this investigation. Diagram of Apparatus Method The apparatus was assembled as shown in the diagram above. 100cm3 of cold water was measured out into a calorimeter. The temperature of the water was recorded. The spirit burner was weighed and recorded, then placed under the calorimeter. The wick was then lit and left until the water had reached a temperature 15ºC higher than the original recorded temperature. When this temperature was reached the flame was put...
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