why does complete combustion happen

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https://www.sciencedirect.com/topics/engineering/complete-combustion

Complete Combustion – an overview | ScienceDirect Topics
https://www.sciencedirect.com/topics/engineering/complete-combustion
Complete combustion of hydrocarbons (without impurities) in the presence of enough oxygen produces water vapor and carbon dioxide. Separation of water vapor from the gas stream is simple; condensation can provide the suitable separation.

https://www.infobloom.com/what-is-complete-combustion.htm

What is Complete Combustion? (with picture)
https://www.infobloom.com/what-is-complete-combustion.htm
What Makes a Combustion Complete When scientists talk about complete combustion, they’re usually discussing an event where everything is consumed by the reaction. In order for this to happen, there needs to be enough available oxygen for every carbon atom in the compound to find a match or a pair in the environmental air.

https://www.auburn.edu/academic/forestry_wildlife/fire/combustion.htm

The Combustion Process
https://www.auburn.edu/academic/forestry_wildlife/fire/combustion.htm
The Combustion process releases this heat. The tremendous amount of heat that is produced in the burning process is the major reason that the suppression of wildfires is such a difficult task and why the use of prescribed fire is a complex and exacting process requiring knowledgeable and experienced people.

https://www.bbc.co.uk/bitesize/guides/zx6sdmn/revision/1

Combustion of fuels – Products and effects of combustion …
https://www.bbc.co.uk/bitesize/guides/zx6sdmn/revision/1
When a fuel burns in plenty of air, it receives enough oxygen for complete combustion. Complete combustion needs a plentiful supply of air so that the elements in the fuel react fully with oxygen….

https://www.brighthubpm.com/monitoring-projects/51010-project-termination-the-day-the-project-died/

An Explanation of what happens during Combustion Reactions …
www.actforlibraries.org/an-explanation-of-what-happens-during-combustion-reactions/
Theoretically, for complete combustion to occur there is a minimum ratio of air to fuel required. Increasing the amount of air will result in more complete combustion and maximize the energy released. However, an excess of air will reduce the temperature of the products and the amount of energy liberated.

https://www.thoughtco.com/combustion-reactions-604030

An Introduction to Combustion (Burning) Reactions
https://www.thoughtco.com/combustion-reactions-604030
In the most general sense, combustion involves a reaction between any combustible material and an oxidizer to form an oxidized product. It usually occurs when a hydrocarbon reacts with oxygen to produce carbon dioxide and water.

https://www.differencebetween.com/difference-between-complete-and-vs-incomplete-combustion/

Difference Between Complete and Incomplete Combustion …

Difference Between Complete and Incomplete Combustion

The key difference between complete and incomplete combustion is that complete combustion takes place when there is a constant and enough oxygen supply whereas incomplete combustion takes place when there isn’t enough oxygen supply. Originally oxidation reactions are the reactions where oxygen gas participates.

https://www.pmi.org/learning/library/project-termination-delay-1931

Difference Between Complete Combustion and Incomplete …
www.differencebetween.net/science/difference-between-complete-combustion-and-incomplete-combustion/
Complete combustion occurs when there is enough oxygen to completely use up all the reactants. Incomplete combustion occurs when there is not enough oxygen resulting in the production of smoke, and less energy is produced when compared with complete combustion. Both complete and incomplete combustion do produce products that can cause problems.

https://www.quora.com/What-type-of-combustion-complete-incomplete-combustion-occurs-in-the-flame-of-a-lit-birthday-candle-Why?share=1

What type of combustion (complete/incomplete combustion …
https://www.quora.com/What-type-of-combustion-complete-incomplete-combustion-occurs-in-the-flame-of-a-lit-birthday-candle-Why?share=1
Real combustion is always incomplete. Given ideal conditions, enough air, time and ventilation, small amounts of CO, H2 gas and other unburnt species will always persist, as can be calculated for any fuel with the rules of chemical equilibrium. Co…

https://socratic.org/questions/why-does-incomplete-combustion-occur

Why does incomplete combustion occur? | Socratic
https://socratic.org/questions/why-does-incomplete-combustion-occur
(Why do want charcoal? Well, you need it for your barbecue; also (and unfacetiously) blacksmiths and metallurgists would have needed it to make and work iron and steel.) A typical diesel fuel, C_16H_34, is so long that complete combustion is quite difficult (sometimes the fuel is unsaturated, but the stuff is a mixture of many hydrocarbons).