Combustion Calculator
Calculate oxygen requirements, CO2 and H2O production for complete combustion of hydrocarbons.
Fuel Composition
Select Common Fuel:
Or Enter Custom Composition:
Balanced Combustion Equation
C1H4 + 2.00O2 -> 1CO2 + 2H2O
Mass Calculations:
O2 Mass
64.0000 g
CO2 Mass
44.0000 g
H2O Mass
36.0000 g
Heat Released (Exothermic):
-890.40 kJ
Based on Methane heat of combustion: 890.4 kJ/mol
Stoichiometric Coefficients:
Fuel: 1
O2: 2.00
CO2: 1.00
H2O: 2.00
Complete Combustion
Complete combustion occurs when a hydrocarbon fuel reacts with sufficient oxygen to produce only carbon dioxide (CO2) and water (H2O). The general equation for complete combustion of a hydrocarbon CxHyOz is: CxHyOz + (x + y/4 - z/2)O2 → xCO2 + (y/2)H2O. This reaction is highly exothermic, releasing significant amounts of energy that can be harnessed for heating, power generation, and transportation.
Fuel Properties
| Fuel | Formula | Heat of Combustion (kJ/mol) |
|---|---|---|
| Methane | CH4 | 890.4 |
| Ethane | C2H6 | 1560 |
| Propane | C3H8 | 2220 |
| Butane | C4H10 | 2878 |
| Octane | C8H18 | 5470 |
| Methanol | CH3OH | 726 |
| Ethanol | C2H5OH | 1367 |
| Glucose | C6H12O6 | 2803 |