Write the reaction equations for the combustion of methyl and ethyl alcohols, ethylene glycol and glycerin

Write the reaction equations for the combustion of methyl and ethyl alcohols, ethylene glycol and glycerin. What is the nature of their flame?

Let’s write down the combustion reactions for alcohols:
2СН3ОН + 3О2 = 2СО2 + 4Н2О – the reaction of methanol combustion is accompanied by a colorless flame;
С2Н5ОН + 3О2 = 2СО2 + 3Н2О – ethanol combustion, bluish color of the flame;
2С2Н4 (ОН) 2 + 5О2 = 4СО2 + 6Н2О – combustion of ethylene glycol, blue flame;
2С3Н5 (ОН) 3 + 7О2 = 6СО2 + 8Н2О – burning of glycerin, the flame is bright, smoky.
Organic alcohols are involved in combustion reactions and can be distinguished by the color of the flame. The reactions are exothermic. Methanol is used as a fuel in internal combustion engines.