Combustion Of Alcos
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|Combustion Of Alcos
Investigating The Combustion Of Alcohols - Planning
This investigation involves burning alcohol in the air. Key science- Chemistry by Eileen Ramsden says that " an alcohol is a series of organic, homologous compounds, with the general formula Cn H2n+1OH". The alcohol reacts with the oxygen in the air to form the products water and carbon dioxide:
Cn H2n+1OH +(n+n/2)-1O2 ? nH2O + nCO2
The structure of the molecules in this reaction is:
H H | | H - C - C - O- H + 3[O=O] ? ½[O=C=O] + 3[H-O-H] | | H H
This reaction is exothermic, as heat is given out. This is because the amount reactant energy is more than the product energy the difference between this is ?H, therefore some energy has been given out in the form of heat.The energy is given out when forming the bonds between the new water and carbon dioxide molecules. This can be shown in an energy level diagram: Reaction co-ordinate ?H is the heat content, which is the enthalpy, which...
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