Smog is formed
when sunlight interacts with hydrocarbons and nitrogen oxides released into the air
by cars and power plants. A highly reactive compound of oxygen and hydrogen called a hydroxyl radical kick starts that reaction. Sinha’s paper focuses on this hydroxyl radical, known as OH.
What is smog chemically?
Smog, formed mainly above urban centres, is composed mainly of
tropospheric ozone
(O
3
); primary particulate matter such as pollen and dust; and secondary particulate matter such as sulphur oxides, volatile organic compounds, nitrogen oxides (NO
x
) and ammonia gas.
Is smog formation a chemical change?
Smog and poor air quality is a pressing environmental problem, particularly for large metropolitan cities. Smog, the primary constituent of which is ground level ozone, is formed by
a chemical reaction of carbon monoxide, nitrogen oxides, VOCs, and heat from sunlight
.
What is the chemical reaction of industrial 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.
What kind of reactions lead to smog formation chemical or physical?
Photochemical smog, often referred to as “summer smog”, is the
chemical reaction of sunlight, nitrogen oxides and volatile organic compounds
in the atmosphere, which leaves airborne particles and ground-level ozone. Photochemical smog depends on primary pollutants as well as the formation of secondary pollutants.
Why is smog bad?
Smog can irritate your eyes, nose and throat
. Or it can worsen existing heart and lung problems or perhaps cause lung cancer with regular long-term exposure. It also results in early death. Studies on ozone show that once it gets into your lungs, it can continue to cause damage even when you feel fine.
What are the 2 types of smog?
At least two distinct types of smog are recognized:
sulfurous smog and photochemical smog
. Sulfurous smog, which is also called “London smog,” results from a high concentration of sulfur oxides in the air and is caused by the use of sulfur-bearing fossil fuels, particularly coal.
Is ozone a smog?
Ozone (O
3
) is a gas molecule composed of three oxygen atoms. Often called “smog,”
ozone is harmful to breathe
.
Who gave the term smog?
Dear Robert, It’s a word with an interesting derivation and, sad to say, a word that poor air quality requires us to use more often than we would prefer to. London, England,
physician Harold Des Veaux
coined the word smog in 1905 to describe natural fog contaminated by smoke: smoke + fog yielded smog.
Which statement is true about smog?
Answer: All the above statement are true.
photochemical smog is composed of two types of pollutants
.
How can industrial smog be reduced?
Getting regular tune-ups, changing oil on schedule, and inflating tires to the proper level
can improve gas mileage and reduce emissions. Fuel up during the cooler hours of the day—night or early morning. This prevents gas fumes from heating up and producing ozone. Avoid products that release high levels of VOCs.
What color is industrial smog?
Smog occurs as a result of smoke particles from industrial plumes mixing with fog. This mixture produces a
yellow-brown color
near ground level, as explained by the U.S. Environmental Protection Agency.
What is another name for industrial smog?
noun Meteorology. air pollution containing ozone and other reactive chemical compounds formed by the action of sunlight on nitrogen oxides and hydrocarbons, especially those in automobile exhaust. Also called
oxidant smog
, smog.
What does smog contain?
Ozone (O3)
is the primary constituent of smog. It is not usually emitted directly into the air, but at ground level is created by a chemical reaction between oxides of nitrogen (NOx) and volatile organic compounds (VOC’s) in the presence of sunlight.
How is smog bad for the environment?
Environmental Impacts
Smog affects much more than just human lives; it also has a large impact on the surrounding physical environment. Ozone and PM in particular cause damaging effects: Ozone
can damage plant cells and inhibit their growth
, reducing the amount of carbon dioxide that they take in during photosynthesis.
How does smog affect human health?
Ground-level ozone (a key component of smog) is associated with many health problems, such as diminished lung function,
increased hospital admissions and emergency room visits for asthma
, and increases in premature deaths.
