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Combustion of Alcohol's When alkanes burn, an exothermic reaction takes place; energy is released as heat. Energy is needed to break the bonds on the left-hand side of each equation. However, once they have been broken down, they are then reformed and this process gives out energy as heat. The aim of our experiment is to find out which alcohol, when burnt, gives out the most energy. We are going to do this by burning different alcohols below a test tube of water. We will wait until the water has risen from 25°C to 80°C and will calculate the mass of alcohol that has been needed to create this temperature change. We will weigh each alcohol before and after each experiment. In my preliminary work, I was able to work out the average amount of energy given out by each alcohol when burnt. Using the bond energies of each type of bond,...

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