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 does photochemical smog form from?

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.

Where does photochemical smog occur?

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…

What is photochemical smog how is it formed and how does it effect?

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 factors affect the formation of photochemical smog?

Factors that contribute to smog formation are the high temperature (direct effect ), sunshine (UV light), calm wind, and heavy traffic (release of air pollutants in the atmosphere).

How is photochemical smog formed quizlet?

Photochemical smog is formed when nitrogen oxides (NOx) and volatile organic hydrocarbons react when activated by sunlight. The steps for the formation of this smog are: 1) Nitrogen oxide (NO) is formed at high temperatures when fossil fuel combustion occurs.

What is the effect of photochemical smog?

Ozone and nitric oxide (NO) can irritate the nose and throat and their high concentration causes a headache, chest pain, dryness of the throat, cough and difficulty in breathing. Photochemical smog leads to cracking of rubber and extensive damage to plant life.

What is 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.

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.

What are the effects of photochemical smog How can photochemical smog be controlled?

CONTROL MEASURES:

Photochemical smog is obtained from the burning of fossil fuels and automobile fuels that emit NO2 and hydrocarbons, which in turn form ozone, PAN, and other chemicals. To prevent the release of NO2 and hydrocarbons into the atmosphere, the use of catalytic converters in automobiles is recommended.

Why is photochemical smog more apparent in urban areas?

Photochemical smog forms from a complex process, however the source of it is quite apparent. Due to the direct production of it by vehicles, the smog forms over cities where many people may encounter its adverse health effects.