defination of photochemical smog?

Answer 1

it is highly oxidising polluted atmosphere comprising largely of ozone,compounds of NO,hydrogen peroxide,organic peroxides,PAN,& PB2N

Answer 2

Photochemical smog is an atmospheric condition that produces severe eye irritation and poor visibility, to name just two of the effects. Three ingredients -- energy from a light source (ultraviolet), hydrocarbons, and nitrogen oxides -- are needed for photochemical smog to be formed. Two of those components are produced through the burning of fossil fuels, most notably automobiles. Photochemical smog is also sometimes known as "oxidizing smog", in that it has a high concentration of oxidizing agents. Ozone is a common oxidizing agent found in photochemical smog. Another type of smog, "reducing smog", has high concentrations of sulfur dioxide, which is a reducing agent. Its presence has historical significance in studies done in places like London, which used sulfur-containing coal as its main energy source.

Answer 3

In the 1950s a new type of smog, known as photochemical smog, was first described. This is a noxious mixture of air pollutants including the following:

* nitrogen oxides, such as nitrogen dioxide
* tropospheric ozone
* volatile organic compounds (VOCs)
* peroxyacyl nitrates (PAN)
* aldehydes (R'O)

All of these chemicals are usually highly reactive and oxidizing. Due to this fact, photochemical smog is considered to be a problem of modern industrialization.

Smog is caused by a reaction between sunlight and emissions mainly from human activity. Photochemical smog is the chemical reaction of sunlight, nitrogen oxides (NOx) and volatile organic compounds (VOC's) in the atmosphere, which leaves airborne particles (called particulate matter) and ground-level ozone. Nitrogen oxides are released in the exhaust of fossil fuel-burning engines in cars, trucks, coal power plants, and industrial manufacturing factories. VOC's are vapors released from gasoline, paints, solvents, pesticides, and other chemicals.

Answer 4

Smog is a particulate. It's essentially dust. It is very fine particulate, usually less that 10 microns, that is the result of incomplete combustion. It is typically found in areas of dense population with high concentrations of small vehicle traffic 9even semi-s are considered small vehicles in this case), so big cities. It is also contributed to by the photochemical reaction of organic compounds, which are also released from incomplete combustion. These are not the ONLY contributors but they are the MAIN contributors.

Answer 5

It is basically air pollution that is not emitted directly (by cars and other sources), but rather is made by chemical reactions on those emitted gasses already in the air with the help of energy from sunlight.

Answer 6

In very hot burning NO2 is produced which when exposed to sunlight turns brown. NO2 is a type of fertilizer ,the worst component from burning is CO,which can be deadly.