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Experiment 8 Determination of the heat of combustion of alcohols Objective To determine the enthalpy change of combustion of a series of alcohols. Principle In the experiment, Methanol, Ethanol and Propan-1-ol, would be used for determining the heat of combustion. They are alcohols with chemical formula CH3OH, C2H6O and CH3CH2CH2OH respectively. The Heat of combustion (?Hc) is the energy released as heat when a compound undergoes complete combustion with oxygen. The chemical reaction is typically a hydrocarbon reacting with oxygen to form carbon dioxide, water and heat.. The heat of combustion is traditionally measured with a bomb calorimeter. It may also be calculated as the difference between the heat of formation (?Hf) of the products and reactants. In order to find the heat of combustion, a measured mass of an alcohol was burnt and the heat released was transferred to a calorimeter soft drink can. The heat capacity of the calorimeter was first determined by calibration with an...

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