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Salters AS Chemistry Assessed Practical - Enthalpy of Combustion
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Salters AS Chemistry Assessed Practical Activity DF 1.3: Enthalpy of Combustion For my assessed practical I will be comparing the enthalpy changes of different alcohols. The enthalpy change of combustion of a fuel is the measure of energy transferred when one mole of fuel burns completely. To find this change I will be using the fuel to heat up some water and I know that to heat up 1g by 1ºC it takes 4.2 J of energy. Requirements * A small copper can or other metal container to act as a calorimeter (base approximately 10cm in diameter). * 0-110ºC thermometer * 100cm3 measuring cylinder * Spirit burners containing: -Methanol -CH3OH -Ethanol -CH3CH2OH -Propan-1-ol- CH3CH(OH)CH3 -Butan-1-ol -CH3CH2CH2CH2OH * A measuring balance * Bunsen burner * Draught shielding * Clamp Method 1. Set up the apparatus as shown in the diagram above; the calorimeter should be placed into the clamp and the draught shielding should be placed either side of this so that when the spirit burner is alight...
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