Logged out
Access All our Essays in an Instant
Swap your work for FREE access, or pay £4.99 for instant access
Investigating the Combustion of Alcohols
Member rating: No Rating | Words: 4643 | Submitted: Thu Jan 24 2008
Page Preview
On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:
CHEMISTRY: INVESTIGATING THE COMBUSTION OF ALCOHOLS PLANNING Aim: šTo investigate the trend in enthalpy change of combustion of a homologous series - the alcohols: methanol, ethanol, propan-1-ol, butan-1-ol, pentan-1-ol by burning in a combustion calorimeter. Name Methanol Ethanol Propan-1-ol Butan-1-ol Pentan-1-ol Structural Formula CH3OH CH3CH2OH CH3CH2CH2OH CH3CH2CH2CH2OH CH3CH2CH2CH2CH2OH Displayed Formula ˛To find out if the -CH2- group between successive alcohols makes a specific contribution to the enthalpy change of combustion between each alcohol. One way of attempting to test these aims would be to burn the alcohols and measure the enthalpy change per mole of each. Introduction Alcohols are used as fuels and when fuels burn they give out energy. The amount of energy given out by burning one mole of a fuel in excess oxygen is known as the enthalpy change of combustion. The enthalpy change of combustion of a substance, ?HC is defined as the 'enthalpy change that occurs when one mole of substance undergoes complete combustion' (i.e. in a plentiful supply...
To see the full version of this document, and 145,328 others
