What is present chemical photo smog?
The major undesirable components of photochemical smog are nitrogen dioxide (NO2), ozone (O3), PAN (peroxyacetylnitrate), and chemical compounds that contain the –CHO group (aldehydes). PAN and aldehydes can cause eye irritation and plant damage if their concentrations are sufficiently high.
What is smog or photo chemical smog?
Photochemical smog is produced when sunlight reacts with nitrogen oxides and at least one volatile organic compound (VOC) in the atmosphere. Nitrogen oxides come from car exhaust, coal power plants, and factory emissions. VOCs are released from gasoline, paints, and many cleaning solvents.
What are the 3 components you need to form photochemical smog?
The primary ingredients that cause photochemical smog are nitrogen oxides, hydrocarbons, and sunlight.
What is the difference between photochemical smog and industrial smog?
Industrial smog occurs in foggy, cool weather typical of that experienced in the British Isles and the eastern seaboard of the United States. Photochemical smog, on the other hand, occurs in hot, dry climates, and particularly on sunny days.
What is photochemical smog and what are its effects?
Photochemical smog is formed when pollutants like hydrocarbons and nitric oxide interact with sunlight to form chemicals like NO2, Peroxyacyl nitrate (PAN), ozone, acrolein and formaldehyde. Nitrogen dioxide formed is a brown gas which contributes to the haze. Harmful effects of photochemical smog.
Why photochemical smog is called so?
‘Photochemical smog’ is so-called because it is formed as a result of a photochemical reaction (i.e. in presence of sunlight) between oxides of nitrogen and hydrocarbons.
Which of the following causes the photochemical smog?
Photochemical smog is caused by ozone, peroxyacetyl nitrate and nitrogen dioxide.
What is photochemical smog how it is harmful?
Photochemical smog is formed when pollutants like hydrocarbons and nitric oxide interact with sunlight to form chemicals like NO2, Peroxyacyl nitrate (PAN), ozone, acrolein and formaldehyde. Nitrogen dioxide formed is a brown gas which contributes to the haze. Both ozone and PAN cause eye irritations.
What is another name for photochemical smog?
Photochemical smog, which is also known as “Los Angeles smog,” occurs most prominently in urban areas that have large numbers of automobiles. It requires neither smoke nor fog. This type of smog has its origin in the nitrogen oxides and hydrocarbon vapours emitted by automobiles…
How does photochemical smog affect the environment?
Photochemical smog has a number of negative effects on the environment and human beings. The chemicals contained within it, when combined with hydrocarbons, form molecules which cause eye irritation. The atmospheric radicals interfere with the nitrogen cycle by stopping ground level ozone from being eliminated.
What is photochemical smog?
Formation and Causes with FAQs Photochemical smog, also known as summer smog, is a type of smog that is produced when UV light originating from the sun interacts with the oxides of nitrogen present in the atmosphere.
Is smog a form of pollution?
Yes! Keep playing. 0:00 What Is Smog? 1:10 How Is Photochemical… 1:30 What Makes up… 2:04 Conditions for… Want to watch this again later? Log in or sign up to add this lesson to a Custom Course. How Is Photochemical Smog Formed? Photochemical smog is produced when pollutants from the combustion of fossil fuels react with sunlight.
How does weather affect photochemical smog?
Decreasing Photochemical Smog. Weather patterns help dissipate photochemical smog. Precipitation can clear the primary pollutants from the air, preventing photochemical smog from forming. Warmer temperatures help air to heat and rise, moving pollutants away from the earth’s surface.
Is ozone the only pollutant in photochemical smog?
This formation occurs early in the process of smog formation. Ozone is certainly corrosive in nature. Besides ozone, there are also a number of other pollutants in photochemical smog which are below: Peroxyacetyl nitrate (PAN)- This pollutant is notable for causing eye and respiratory irritation.