Application of Endothermic Reaction and Exothermic Reaction in Daily Life (2)

The unit for fuel value

is kJ g−1

Way to determine the fuel value

The fuel value can also be determined with the heat of combustion of substances

Formula of fuel value

Example of calculation of fuel value

Fuel for vehicles

Are known as RON 95 or RON 97

RON (1)

Refers to Research Octane Number

RON (2)

- Fuel with a higher RON is more difficult to burn - Fuel with a lower RON will burn easily

Fuel value for wood

20 kJ g−1

Fuel value for methane

27 kJ g−1

Fuel value for charcoal

30 kJ g−1