Which paragraph below explains the differences beween the enthalpy changes of combustion of alcohols the best?
Paragraph one – “The enthalpy change of combustion increases as the number of carbon atoms in the molecule increase. This is because there are more higher value bond enthalpies made, giving out more energy. The increase is a constant 618 KJ/mol-1 per carbon atom or for every two hydrogen atoms, so the structure of the alcohol proportionally affects the enthalpy change of combustion. So the larger alcohols will give out more heat energy per mole and the temperature of the water will rise more while less of the fuel is burnt leading to a higher enthalpy change of combustion. For alcohols of the same mass number, the less branches it has, the higher its enthalpy of combustion.” Or, Paragraph two – “The enthalpy change of combustion increases as the number of carbon atoms in the molecule increase. This is because there are more higher value bond enthalpies made, giving out more energy. The increase is a constant 618 KJ/mol-1 per carbon atom or for every two hydrogen atoms, so the structure
