CH4 + 2 (O2+3.762 N2) ⇾ CO2 + 2 H2O + 7.524 N2

Composition des gaz brûlés
CO2 H2O O2 N2 Total
Nombre de moles 1 2 0 7.524 10.524
calcul fraction molaire =1/10.524 =2/ 10.524 =0/ 10.524 =7.524/ 10.524
fraction molaire 0.09502 0.19 0 0.7149