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What does 'nox' mean?
Nitrogen combines with oxygen to form a variety of compounds, many of which are considered air pollutants. When talking about air pollution it's sometimes convenient to lump all of them together, hence the generic term "NOx" meaning "nitrogen combined with some amount, we're not sure or don't really care how much, of oxygen"
Why petrol engines produce oxides of nitrogen?
Petrol engines produce oxides of nitrogen (NOx) as a byproduct of combustion at high temperatures. Specifically, nitrogen in the air reacts with oxygen in the engine's combustion chamber to form NOx gases. Factors such as high compression ratios and combustion temperatures can contribute to increased NOx emissions from petrol engines.
How are nitrogen oxides produced in a petrol engine?
Nitrogen oxides (NOx) are produced in a petrol engine when the high temperatures and pressures cause nitrogen and oxygen in the air to react. The combustion process in the engine leads to the formation of nitrogen monoxide (NO), which can further react with oxygen to form nitrogen dioxide (NO2). These compounds are collectively referred to as NOx emissions.
What formula of the ionic compound formed by the elements lithium and oxygen?
The electronegativity difference between carbon and oxygen is small. So they will form only covalent compounds and not ionic compounds. CO (carbon monoxide) and CO2 (carbon dioxide) are the two covalent compounds formed. In addition they can form ions like bicarbonate ion (HCO3-) and carbonate ion (CO32-) where there is covalent bond (and not ionic) between carbon and oxygen.
Why can oxygen and nitrogen react together in a car engine?
In a car engine, oxygen and nitrogen from the air can react due to the high temperatures created during combustion. Nitrogen oxides (NOx) are formed as a byproduct of this reaction, which is a contributor to air pollution.
What is the role of NOx in ozone depletion?
NOx is the byproduct of water vapor blocking one path of ozone production. An oxygen atom is temporarily stored in an unstable state on a nitrogen molecule (N2O*). Encountering a water molecule stabilizes the NOx. NOx does not itself decay ozone, but acts as a "getter" for water vapor (further protecting ozone). NOx is like the dead body for a stillborn ozone molecule.
How are nitrogen oxides produced?
Nitrogen oxides are produced by the combustion of fossil fuels in vehicles, power plants, and industrial processes. When these fuels are burned at high temperatures, nitrogen and oxygen in the air react to form nitrogen oxides. Lightning and certain microbial processes can also contribute to the production of nitrogen oxides in the atmosphere.
When fuels burn what components of air are reactants?
The main components of air that react during combustion of fuels are oxygen and sometimes nitrogen. Oxygen is necessary for the combustion process to occur, while nitrogen can react at high temperatures to form nitrogen oxides (NOx).
What is the abbreviation for nitrogen oxides (NOx) and how does it contribute to air pollution?
The abbreviation for nitrogen oxides is NOx. NOx contributes to air pollution by reacting with other pollutants in the atmosphere to form smog and acid rain, which can harm human health and the environment.
What elements does nitrogen combined with?
Nitrogen can combine with various elements such as hydrogen to form ammonia (NH3), oxygen to form nitrogen oxide (NOx), carbon to form cyanides (C-N), and many other elements to form a wide range of nitrogen compounds.
Why can nitrogen and oxygen combine inside a car engine?
Nitrogen and oxygen can combine inside a car engine due to the high temperatures reached during combustion. This leads to the formation of nitrogen oxides (NOx) as a byproduct. Nitrogen and oxygen in the air react with each other under these conditions to produce NOx emissions.
Where is the NOx sensor located on a 1987 Chevy truck?
the oxygen sensor is in the exhaust manifolds, there should be one for each side
