Admin Table of Contents
- 1 What is a thick brownish haze formed when certain gases in the air react with sunlight?
- 2 What is a brown haze that forms when air pollutants react in the presence of sunlight?
- 3 What forms when sunlight reacts with chemicals in the air?
- 4 Why Photochemical smog is called so?
- 5 What is photochemical smog Slideshare?
- 6 What causes haze in the air?
What is a thick brownish haze formed when certain gases in the air react with sunlight?
photochemical smog – thick brownish haze formed when certain gases in the air react with sunlight. smog can cause breathing problems eye and throat irritation.
What is a brown haze that forms when air pollutants react in the presence of sunlight?
What is photochemical smog? Photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities. It tends to occur more often in summer, because that is when we have the most sunlight.
Is a brown haze caused by the action of sunlight on chemicals?
The brown haze that develops in sunny cities is called photochemical smog. Photochemical smog is formed by the reaction of sunlight to pollutants such as hydrocarbons and nitrogen oxides. These chemicals react to form a brownish mixture of ozone and other pollutants. Another result of air pollution is acid rain.
What forms when sunlight reacts with chemicals in the air?
When sunlight hits these chemicals, they form airborne particles and ground-level ozone—or smog. Ozone can be helpful or harmful.
Why Photochemical smog is called so?
Ground-level ozone constitutes one of the major components of photochemical smog, so called because of the photochemical reaction of air pollutants such as nitrogen oxides (NOx) and volatile organic compounds (VOCs) with ultraviolet light (sunlight); thus, the O3 levels vary strongly with season and the highest levels …
Which compound gives photochemical smog a brownish color?
Nitrogen oxides
Nitrogen oxides are at least partially responsible for several types of air pollution. Nitrogen dioxide lends its color to the reddish-brown haze we call smog.
Photochemical Smog is an air pollution ,formed when photons of sunlight hit molecules of different kinds of pollutants in the atmosphere. AIR POLLUTANT Primary Air Pollutant NOx , VOCs Secondary Air Pollutant Ozone(O3) , PAN. Process Involving Formation Of Photochemical Smog.
What causes haze in the air?
Haze is caused when sunlight encounters tiny pollution particles in the air. Some light is absorbed by particles. Other light is scattered away before it reaches an observer. More pollutants mean more absorption and scattering of light, which reduce the clarity and color of what we see.
What is photochemical oxidation?
Photochemical oxidation is secondary air pollution, also known as summer smog. It is the formed in the troposphere caused mainly by the reaction of sunlight with emissions from fossil fuel combustion creating other chemicals (eg ozone)[1]. Units.