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A Comparison of the Energy Released When Different Fuels are burned.
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A Comparison of the Energy Released When Different Fuels are burned Aim: To compare and test how well Methanol, Ethanol, Propanol, Butanol and Pentanol will burn and how much energy will be produced. Introduction: Alcohols have the general formula CnH2n+1OH. These atoms are generally part of a homologous chain. I have been set a task to investigate the burning of alcohols. As the structure shows, the alcohols will burn in oxygen to form carbon dioxide and water vapour. Alcohol + oxygen carbon dioxide + water Using this equation I will calculate the bond energy formed, bond energy broken and the H (which will tell me what type of reaction it will be). The five alcohols that will be burned are: Methanol, Ethanol, Propanol, Butanol and Pentanol. Calculations: * Methanol Methanol + oxygen carbon dioxide + water CH3OH + 11/2O2 CO2 + 2H2O Sum of bond energies broken: 3(H-C) 3 x 413 = 1239 (C-O) 358 = 358 (O-H) 464 = 464 11/2(O=O) 11/2 x...
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