Combustion reaction of alkenes, alkadienes, alkynes, arenes?

Let’s compose the equations for hydrocarbons: ethene, butadiene, propyne, toluene.
1. С2Н4 + 3О2 = 2СО2 + 2Н2О + Q – combustion of ethylene with a glowing flame, accompanied by the release of carbon dioxide and water;
2. 2С4Н6 + 11О2 = 8СО2 + 6Н2О + Q – exothermic reaction, butadiene is burning;
3. С3Н4 + 4О2 = 3СО2 + 2Н2О + Q – propyne burns with the release of heat;
4. С6Н5 – СН3 + 9О2 = 7СО2 + 4Н2О + Q – toluene burns with a smoky flame.
In the process of combustion reactions, complete oxidation of hydrocarbons occurs, accompanied by the release of heat. Hydrocarbons can be distinguished by the color of the flame, that is, these reactions are qualitative.