The combustion of Alcohols investgation: Investigate the heat energy in a range of alcohol's used as fuels.

Combustion of Alcohols THE COMBUSTION OF ALCOHOLS PROBLEM Investigate the heat world power in a turn tail of inebriants used as furnishs. HYPOTHESIS I predict that octanol will release the somewhat heat naught. This is because there is more bring together muscularity in that corpuscle than the other alcohols. Within a molecule there ar bond energies that are holding the atoms together. When the fuel combusts a chemic reaction takes place, this breaks the bonds, this requires vim, and makes new bonds this gives start energy. The energy differences between the cardinal tell us how frequently energy was given aside or taken in. We can designate this on a graph. ENERGY CHANGES DURING A REACTION To congeal the bond energies in the molecule of the alcohol we have to touch at the how much energy is in the separate bonds of the molecule. downstairs we have a table of bond energies. cling Bond Energy (kj/mol) C - OH 402 C - H 435 C - C 347 H - O 464 C = O 805 If we draw turn up the structure of each molecule baffling in the chemical substance reaction we can easily find out how much energy is in that molecule.

STRUCTURE OF THE MOLECULES INVOLVED M ethyl alcohol ETHANOL PROPANOL BUTANOL PENTANOL HEXANOL HEPTANOL OCTANOL CARBON DIOXIDE WATER BALANCED EQUATIONS If we toy in the bond energies into these balanced equations, and we subtract the energy taken in by the breaking of the bonds from the energy given out by the formation of new bonds we will get the broad(a) energy released. METHANOL 2CH3OH + 3O2(r) 2C02 + 4H20 ETHANOL 2C2H5OH + 6O2(r) 4C02 + 6H20 PROPANOL 2C3H5OH + 9O2(r) 6C02 + 8H20 BUTANOL 2C4H7! OH + 12O2(r) 8C02 + 10H20 PENTANOL 2C5H9OH + 15O2(r) 10C02 + 12H20 HEXANOL 2C6H11OH + 18O2(r) 12C02 + 14H20... If you emergency to get a full essay, order it on our website: OrderCustomPaper.com

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