The combustion products of carbon (toxic CO and CO2) and hydrogen (H2O) are also formed.(one CO2 for every C and one H2O for every two H's in the hydrocarbon molecule).
CnH2n+2 + (3n+1) O2. nCO2 + (n+1) H2O. 2. In a limited air supply carbon ... Reactions of Cl2, Br2, HCl and HBr with simple alkenes .