Why does petrol do not get burn on its own on room temperature?
Answers
The burning of petrol is an extremely complex reaction that involves many steps and concepts, however, this answer can be broken down into more elementary terms. For a chemical reaction to occur, the reactants must have a certain amount of energy. In this case, the energy necessary for petrol to burn is rather high, and is not easily achieved at room temperature. Petrol does burn when exposed to a match, however, because the heat energy from the match provides enough energy for a small amount of the petrol to burn. But when that small amount of petrol burns, the energy released from the reaction heats up nearby molecules and causes those molecules to reaction, creating a chain reaction that quickly consumes the entire supply of petrol. Hope this helps!
The minimum temperature at which a substance catches fire and burns is called it's ignition temperature.
ignition temperature of petrol is 246 degree Celsius.