what is the main component of photochemical smog

peroxyacetylnitrate

Peroxyacetyl nitrate, or PAN, is an oxidant that is more stable than ozone. Hence, it is more capable of long-range transport than ozone. It serves as a carrier for oxides of nitrogen (NOx) into rural regions and causes ozone formation in the global troposphere.

What is the main component of photochemical smog quizlet?

nitrogen oxide (NO) and nitrogen dioxide (NO2) collectively. These gases play a role in photochemical smog. colorless and highly reactive gas; a major component of photochemical smog and also found in the stratosphere where it protects life by filtering out most harmful UV radiation from the sun.

What are the 3 major ingredients of photochemical smog?

The formation of photochemical smog involves three primary ingredients: nitrogen oxides, hydrocarbons and sunlight.

Which of the following is the main component of smog?

Smog, formed mainly above urban centres, is composed mainly of tropospheric ozone (O₃); 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.

What is photochemical smog How does it form what is the main component of 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.

What is the main component of smog quizlet?

What are the major components of smog? When and how does smog form in Los Angeles? nitrogen oxides (largely from automobile exhaust), volatile hydrocarbons, and oxygen in the atmosphere to produce ground-level ozone; this reaction requires solar energy.

Which is not the common component of photochemical smog?

Hence chlorofluorocarbons are not common component of photochemical smog.

Is SO2 a component of photochemical smog?

Since SO2 is a reducing agent and photochemical smog is normally con- sidered to be an oxidizing system, an interaction would be expected. Atten- tion naturally is directed toward the reaction of SO2 with ozone, the major oxidant in photochemical smog.

Which of the following is an example of the photochemical pollutant?

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.

What is the difference between smog and photochemical smog?

Sulfurous smog, also known as London smog, develops due to high concentration of sulfur oxides in the air. … Photochemical smog is produced when sunlight reacts with oxides of nitrogen and at least one volatile organic compound (VOC) in the atmosphere.

How is photochemical smog formed what secondary pollutant is a major component?

Smog forms when sunlight, nitrogen oxides, and volatile organic compounds are present. The secondary pollutant ozone is a major component of photochemical smog. … Acidic desposition, which is comprised of hydrogen, sulfate, and nitrate ions, forms from both sulfur dioxide and nitrogen oxides.

What is photochemical smog in environmental chemistry?

Photochemical smog is a type of air pollution due to the reaction of solar radiation with airborne pollutant mixtures of nitrogen oxides (NOx) and volatile organic compounds (hydrocarbons). Smog is a byproduct of modern industrialization. … Oxidation: Photochemical smog is also referred to as oxidizing smog.

What is photochemical smog Class 11?

Photochemical smog refers to a type of smog which is formed when the ultraviolet light from the sun reacts with nitrogen oxides present in the atmosphere. This smog can cause a lot of adverse effects on humans and other living organisms.

What are the two main components of smog?

Smog is made up of many chemicals including nitrogen oxides (NOx), sulphur dioxide (SOx), carbon monoxide (CO), and volatile organic compounds (VOCs), but the two main components of smog are particulate matter (PM) and ground-level ozone (O₃).

Which criteria pollutant is the biggest part of photochemical smog?

Ozone (O₃)

Ozone at ground level – not to be confused with the ozone layer in the upper atmosphere – is one of the major constituents of photochemical smog.

Which gas is commonly found in smog quizlet?

Nitrogen oxide (NO) and nitrogen dioxide (NO2) collectively. These gases play a role in photochemical smog and can irritate the eyes, nose, throat, and lungs; aggravate asthma and bronchitis; and increase susceptibility to respiratory infections by impairing the immune system.

Which of the following is a common component of photochemical smog and is a reddish brown gas?

Nitrogen dioxide is a deep red-orange gas that is poisonous but not flammable. It, along with aerosols, is responsible for the reddish-brown color of smog.

Is unsaturated hydrocarbon components of photochemical smog?

\[N{O_2}\] and unsaturated hydrocarbons are the primary constituents of photochemical smog. These primary constituents are introduced into the atmosphere via vehicular emissions and industrial processes.

Which is the major photochemical oxidant?

The most commonly known photochemical oxidants are ozone, hydrogen peroxides and peroxyacetyl nitrate (PAN). These are formed under the influence of sunlight by complex photochemical reactions. The concentrations of the photochemical oxidants depend on the primary pollutants and the sunlight.

Which of the following compounds contributes to photochemical smog?

Photochemical smog depends on primary pollutants as well as the formation of secondary pollutants. These primary pollutants include nitrogen oxides, particularly nitric oxide (NO) and nitrogen dioxide (NO₂), and volatile organic compounds.

What is photochemical smog give examples?

Photochemical smog is a type of smog produced when ultraviolet light from the sun reacts with nitrogen oxides in the atmosphere. … Cities that experience this smog daily include Los Angeles, Sydney, Mexico City, Beijing, and many more.

Is photochemical smog a primary pollutant?

Photochemical smog is composed of primary and secondary pollutants. Primary pollutants, which include nitrogen oxides and volatile organic compounds, are introduced into the atmosphere via vehicular emissions and industrial processes. … Photochemical smog is most common in sunny and dry cities, like Los Angeles.

What component is different in industrial smog from photochemical smog?

It is produced when nitrogen oxides and volatile organic compounds in automobile and fossil-fueled power-plant emissions combine with oxygen in the air in direct sunlight. Whereas industrial smog casts a gray pallor over the areas it affects, the nitrogen dioxide in photochemical smog creates a dingy, brownish haze.

What does industrial smog and photochemical smog?

Both industrial and photochemical smog are types of air pollution. There has been an general decrease in air quality since the beginning of the Industrial Revolution, which saw an increase burning of fossil fuels to provide energy. Both types of smog are formed as a result of smoke released from industrial processes.

What is the main difference between photochemical smog and sulfurous or London smog?

Classical Smog vs Photochemical Smog

London smog or Classical smog	Los Angeles smog or Photochemical smog
This type of smog is first observed in 1952 in London.	This type of smog was first observed in 1943 in Los Angeles.
It involves smoke and fog (smog)	The word smog is misnomer here as it does not involve any smoke or fog.

What is a secondary pollutant involved in photochemical smog?

Photochemical smog is made up of various secondary pollutants like ozone, peroxyacyl nitrates (PANs), and nitric acid (seen in Figure 2). Different types of secondary pollutants include: Ozone (O₃) Sulfuric acid and nitric acid (component of acid rain)

What is photochemical smog quizlet?

– Photochemical smog is a yellow-brown haze due to nitrogen dioxide. – The presence of this gas and other pollutants can cause health problems. Formation of nitrogen oxides. – Nitrogen oxides are formed in high temperature engines and furnaces.

Which gas is formed in photochemical smog?

Among the pollutants involved in photochemical smogs are ozone, nitrogen dioxide and peroxyacyl nitrate (PAN). The nitrogen dioxide, and other oxides of nitrogen, are primary pollutants produced by dissociation in combustion reactions, and both ‘prompt’ and ‘thermal’ NO_x can be involved in the reactions.

What causes photochemical smog quizlet?

Photochemical smog is caused by nitrogen oxides combing with sunlight and other pollutants. Acid rain is caused by sulfur oxides and nitrogen oxides combining with water. You just studied 13 terms!

Which is not components of smog?

Classic smog results from large amounts of coal burning in an area and is caused by a mixture of smoke and sulfur dioxide. Smog does not contain Chlorine oxide.