How does the Relative Molecular Mass change in heat combustion of an alcohol? :: GCSE Chemistry Coursework Investigation

How does the Relative Molecular Mass adjustment in heat blaze of an alcohol?PlanningIntroduction============As alcohol burns in air it infracts place elan vital as heat and light. I amgoing to investigate how the energy come onput of an alcohol in combustionchanges, with increased relative molecular mass, or RMM. RMM is thesum of the atomic masses of each atom in the molecule. exploitation thealcohols Methanol, Ethanol, Propan-1-ol, Butan-1-ol and Pentan-1-ol,I will plan, and complete an experiment that tests the predictionbelow.======================================================================Prediction And hypothesis=====================In the combustion of alcohols in air, the alcohol reacts with oxygenmolecules, to create vitamin C dioxide and water. Many bonds are brokenin the process using up energy. At the same time, the atoms reforminginto the new molecules of carbon dioxide and water give out energy. Inthe combustion of alcohols, the energy created, when formi ng bondswill always be to a greater extent that what is lost, when breaking bonds, this givesus excess energy. This energy is given out in the beginning as heat, but alsoas light and sound. As energy is given out it is called an exothermicreaction. If the opposite were true, it would be an endothermicreaction. It is never possible to calculate exact energy change by experimentation due to inaccuracies and energy waste, so we use bondenergy calculations give the exact theoretical energy change.Bond energy calculations supply that the higher(prenominal) the RMM the more energywill be produced for the same weight of force out (RMM is the sum of theatomic masses of every atom in the molecule). This is because as theRMM increases there are more atoms and thus, more bonds to bebroken and thusly made. As, when burning alcohols, this process givesout energy, the more bonds go through this process, ie as the RMMincreases the more energy should be released. The calculations alsosuggest t hat for every carbon atom you add to the chain of an alcoholthe energy out should increase by618 Kj/mol. I predict indeed, that as the RMM goes up then the energychange will get increasingly more negatively charged i.e. more energy is givenoff. The RMM will be proportional to the lowest energy created as bothshould increase by the same modus operandi each time, (RMM by 14 as one C and2 H atoms are added, and the energy out by 618KJ/mol). This willtherefore result in a straight-line on the graph. The bond energycalculations show how much energy should be released, accounting forexperimental inaccuracies however, I deliver the experimental output tobe considerably less.Proposed MethodI am going to test how the energy output per mole in the combustion of