What type of oxides are generated upon combustion?

Combustion processes can produce various types of oxides based on the materials being burned and the conditions of combustion. In the context of this question, oxides of nitrogen are a significant product of combustion, especially in high-temperature conditions common in engines and power plants.

During combustion, the high temperatures can facilitate the reaction between nitrogen in the air and oxygen, forming nitrogen oxides (NOx), which include both nitric oxide (NO) and nitrogen dioxide (NO₂). These gases contribute to air pollution and have significant environmental and health impacts, leading to regulations aimed at reducing their emissions.

While other oxides can also be produced during combustion—such as carbon oxides from the burning of carbon-based fuels or oxides of sulfur when sulfur-containing fuels are used—oxides of nitrogen are particularly noteworthy due to their role in the formation of smog and acid rain. Therefore, the emphasis on nitrogen oxides reflects the importance of understanding combustion processes and their environmental implications.