Photochemical Smog (Animation)

#PhotochemicalSmog #AnimatedChemistry #KineticSchool
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Formation of Photochemical smog:
"Smog" is a mixture of fog and smog which occurs in some busy industrial cities.
Smoke + Fog = SMOG
Smog is of two types:
1. Classical Smog.
2. Photochemical Smog.
Classical Smog, is produced by the combustion or burning of fossil fuels like coal, petrol or gasoline etc., and caused by a mixture of smoke and SO2, present in air.
Classical smog also known as London Smog.
• It’s also reducing in nature.
• It occurs in cool, humid climate.
• Major Constituents are smoke, fog and sulfur dioxide.
• It can occur both during the day and at night.
In December 1952, London was trapped in a deadly cloud of fog and pollution for five days.
At the time, the city ran on cheap coal for everything from generating power to heating homes.
which was the result of classical smog.
Photochemical smog is a type of smog produced when ultraviolet light from the sun reacts with nitrogen oxides (NOx) and volatile organic compounds (VOCs) in the atmosphere.
• It is also referred to as "Summer Smog" or "Los Angeles Smog".
• It is an Oxidising Smog and visible as a Brown Haze.
• It only happens in the presence of sunlight.
• Major Constituents are Hydrocarbons, O3, PAN and NOx.
• It is most prominent during the morning and afternoon.
photochemical smog formation is influenced by the weather conditions, such as
• Warm Sunny Days.
• Gentle Winds.
• Lower Level Inversion, which is also known as Thermal Inversion.
• Combustion of hydrocarbon and Nitrogen Oxides.
Sources of Photochemical smog’s pollutants.
•Volcanic eruption
• Forest fire
• Automobiles
• industry
• power plant
Reaction of Photochemical smog:
•Nitrogen (N₂) and Oxygen (O₂) combine in the combustion process to form Nitric Oxide (NO).
N₂ + O₂ = 2NO
•This Nitric Oxide (NO) oxidized in the atmosphere to produce Nitrogen Dioxide (NO₂).
2NO + O₂ = 2NO₂
•Sunlight breaks down Nitrogen Dioxide (NO₂) into Nitric Oxide (NO) and an Oxygen radical (O).
NO₂ + h𝝊 = NO + O
•The Oxygen radical (O) combines with molecular Oxygen (O₂) to form Ozone (O₃).
O₂ + O = O
•Ozone (O₃) is the main component of photochemical smog.
•NO can remove O₃ by reacting with it to form NO₂ and O₂ .
NO + O₃ = NO₂ + O₂
Alternative Reactions:
NO and NO₂ can also react with the hydrocarbons instead of O₃ to form other volatile compounds known as PAN (peroxyacetyl nitrate).
NO₂ + O₂ + Hydrocarbons + light → PAN
a) Reactive hydrocarbon (those with C=C group) from auto exhaust interact with O₃ to from a hydrocarbon free radical RCH₂•.
b) RCH₂• rapidly reacts with O₂ to from another free radical RCH₂O₂•.
c) RCH₂O₂• reacts with NO to produce NO₂ & the free radical RCH₂O•
d) This new free radical next interacts with O₂ to yield a stable aldehyde (RCHO), and hydroperoxyl radical (HO₂•).
e) HO₂• then reactive with another molecule of NO to give NO₂ & HO•.
f) HO• is extremely reactive & rapidly reacts with a stable hydrocarbon RCH ₃ to yield H₂O & regenerate the hydrocarbon free radical RCH₂•, thereby completing cycle.
Peroxyacetyl nitrate is also known as peroxyacyl nitrate.
Photochemical smog was first identified in Los Angeles in 1944.
In 2017, Photochemical smog to envelop large parts of Beijing.
Otherwise, In November 2017, the air pollution spiked far beyond acceptable levels in Delhi.
Effects of Photochemical smog:
Photochemical smog's effects cause eye irritation, damage to the respiratory system and vegetation.
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Пікірлер: 68

  • @swarnimabanjare1254
    @swarnimabanjare12544 жыл бұрын

    Nice video...but background music should be less...

  • @ravinderkjangral
    @ravinderkjangral11 ай бұрын

    Never had watched a better illustration than this on youtube

  • @koollyn542
    @koollyn5422 жыл бұрын

    thank you so much. I have an assignment regarding photochemical smog, this video was a great help cause I didn't know where to start.

  • @KINETICSCHOOL

    @KINETICSCHOOL

    2 жыл бұрын

    I'm so glad!

  • @burkaahmed5222
    @burkaahmed52224 жыл бұрын

    very nice. very good animation also. thank you! fall forward

  • @shyammohankunwar3006
    @shyammohankunwar30065 жыл бұрын

    Thank you 😊 Love from India 🇮🇳.

  • @ritika-royaladmin337
    @ritika-royaladmin3374 жыл бұрын

    This video was incredibly helpful. Thanks mate

  • @reenkiju
    @reenkiju7 ай бұрын

    👍🏻 great video

  • @rautrd9384
    @rautrd93842 жыл бұрын

    Bruh you nailed it

  • @varshasinha9069
    @varshasinha90695 жыл бұрын

    Please cover the most of topics of environmental science.. So nice vedio.. Having lots of information 👍👍👍

  • @irzahafeez639
    @irzahafeez6393 жыл бұрын

    Remarkable

  • @omsingh2487
    @omsingh24875 жыл бұрын

    Nice 👍, carry onnnn❤❤❤❤

  • @ritambharasingh9520
    @ritambharasingh95204 жыл бұрын

    Nicely explained ..

  • @Sheetal-bn1td
    @Sheetal-bn1td4 жыл бұрын

    Very nice, loved it.. Thank you Made this boring chapter quite interesting through pictures...

  • @unnikrishnanthaliyil9590
    @unnikrishnanthaliyil95904 жыл бұрын

    Thank you sir 🙏🙏🙏. Nice vedio 👏👏👏.

  • @aliyahbhatbhat8458
    @aliyahbhatbhat84585 жыл бұрын

    Very very good vedio...

  • @clearconceptsofchemistry2715
    @clearconceptsofchemistry2715 Жыл бұрын

    Informative

  • @tusharsirschemistry
    @tusharsirschemistry5 жыл бұрын

    Absolutely fantastic

  • @KINETICSCHOOL

    @KINETICSCHOOL

    5 жыл бұрын

    Thank you Sir. We value your feedback.

  • @kushagratiwari8842
    @kushagratiwari88423 жыл бұрын

    Really helpful and informative! However, there's much scope of improvement with the editing and graphics. Thank you for the efforts that went in making this! Love from India!❤️

  • @jigneshsabhadiya7358

    @jigneshsabhadiya7358

    3 жыл бұрын

    www.engineeringchoice.com/smog-causes-effect-and-control-measures/

  • @Dwg256

    @Dwg256

    2 жыл бұрын

    16.11.2021.

  • @yashkirar4547

    @yashkirar4547

    2 жыл бұрын

    You are from riwa

  • @akhlaqahmad6095
    @akhlaqahmad60953 жыл бұрын

    Very very nice and easy to understand and appreciate your help sir

  • @KINETICSCHOOL

    @KINETICSCHOOL

    3 жыл бұрын

    Thanks.

  • @tusharsirschemistry
    @tusharsirschemistry5 жыл бұрын

    Nice video

  • @alopuchophy2289
    @alopuchophy2289 Жыл бұрын

    Thank you so much it help me a lot in my assignment 👍👍👍👍👍👍thank you 👍

  • @shivanilanderi2665
    @shivanilanderi26653 жыл бұрын

    Very helpful and the rxns were ossum....

  • @KINETICSCHOOL

    @KINETICSCHOOL

    3 жыл бұрын

    Thanks a ton

  • @crazyindians2524
    @crazyindians25243 жыл бұрын

    Very good

  • @harissafi4311
    @harissafi43112 жыл бұрын

    😎 Well done...it was awesome 👌 👏...

  • @KINETICSCHOOL

    @KINETICSCHOOL

    2 жыл бұрын

    Thank you so much 😀

  • @BioMnemonic
    @BioMnemonic3 жыл бұрын

    Keep it up

  • @sanagee6637
    @sanagee6637 Жыл бұрын

    Much info i got from ur video

  • @MythBusting
    @MythBusting5 жыл бұрын

    Background music is too loud so I can't hear the speaker, other than that nice video.

  • @KINETICSCHOOL

    @KINETICSCHOOL

    5 жыл бұрын

    Thankyou for your feedback . We will try to improve in upcoming videos.

  • @jigneshsabhadiya7358

    @jigneshsabhadiya7358

    3 жыл бұрын

    www.engineeringchoice.com/smog-causes-effect-and-control-measures/

  • @ashvinimanjare7106
    @ashvinimanjare71062 жыл бұрын

    Nice presentation 👍

  • @KINETICSCHOOL

    @KINETICSCHOOL

    2 жыл бұрын

    Thanks a lot

  • @scandinavian5476
    @scandinavian54765 жыл бұрын

    Wow wat an explaination

  • @tarekatassi1243

    @tarekatassi1243

    5 жыл бұрын

    truly

  • @kushagratiwari8842

    @kushagratiwari8842

    3 жыл бұрын

    what* explanation*

  • @adityatiwari968
    @adityatiwari9683 жыл бұрын

    Nice video mam

  • @mehmoodadehwar9224
    @mehmoodadehwar9224 Жыл бұрын

    Thanks it's really helpful

  • @k3nz1e73

    @k3nz1e73

    Жыл бұрын

    No worries

  • @sakshiagrawal4773
    @sakshiagrawal47733 жыл бұрын

    Amazing video

  • @KINETICSCHOOL

    @KINETICSCHOOL

    3 жыл бұрын

    Thanks for the visit

  • @lavanyamngowda9983
    @lavanyamngowda99835 жыл бұрын

    Go by this video i complete understand the concept of this photochemical smog which made easy compare to boring teach by professors in college thank you very much

  • @KINETICSCHOOL

    @KINETICSCHOOL

    5 жыл бұрын

    Such comments are truly inspiring. Thank you.

  • @harman6328
    @harman63282 жыл бұрын

    very nice explaination

  • @KINETICSCHOOL

    @KINETICSCHOOL

    2 жыл бұрын

    Thanks and welcome

  • @anon-iy9zj
    @anon-iy9zj2 жыл бұрын

    Reaction of Photochemical smog- 3:44

  • @ben386
    @ben3862 ай бұрын

    can you give sources for the underlying chemistry of photochemical smog... I need to research for an important project

  • @Macaronyman17
    @Macaronyman174 жыл бұрын

    Wacky animations and the google translator voice is hard to follow but nevertheless very good explained! Thanks for the video:)

  • @Vinod-kumar-saini
    @Vinod-kumar-saini3 жыл бұрын

    Thanks ☺️😊

  • @KINETICSCHOOL

    @KINETICSCHOOL

    3 жыл бұрын

    Welcome 😊

  • @cephasdn6576
    @cephasdn6576 Жыл бұрын

    Is it a radicle or just atomic oxygen

  • @user-jj5lu3vw9w
    @user-jj5lu3vw9w7 ай бұрын

    ❤❤

  • @ansarneptune2496
    @ansarneptune24964 жыл бұрын

    Thnkuuuu

  • @mantasha12355
    @mantasha123557 ай бұрын

    Which app do you use for mKing this video

  • @gjyotish2841
    @gjyotish28414 жыл бұрын

    Very useful video, I am Global citizen of Earth, plant a tree to protect our home planet, wishing good time from INDIA..

  • @dr.rohitgahlawat
    @dr.rohitgahlawat4 жыл бұрын

    Video is nice but background music is too loud

  • @faminlova
    @faminlova3 жыл бұрын

    love from Pakistan

  • @ishraqtariq24
    @ishraqtariq245 ай бұрын

    I Have Explained about How SMOG is Killing Me? In My Latest Video!!

  • @sujeetkumarpatil
    @sujeetkumarpatil2 жыл бұрын

    Photochemical smog is loss Angel smog Not London smog London smog is known as classical smog

  • @huzaifaahmad2767
    @huzaifaahmad27674 жыл бұрын

    The video would be good without that annoying Music

  • @umar516
    @umar516 Жыл бұрын

    Too long

  • @imrangill9310
    @imrangill93103 жыл бұрын

    Nice video