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Combustion

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Shivam Kaushal

on 10 March 2016

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Transcript of Combustion

Combustion
EXPLANATION
hydrocarbon + oxygen = carbon dioxide + water
exothermic reaction
incomplete combustion may not have the same products
BIOCHEMISTRY
- undergo combustion
- cellular respiration
HAZARDS & CONCERNS
Produces harmful byproducts
Limited energy production
Carbon monoxide poisoning
COMPLETE COMBUSTION
- Occurs when
- oxygen is abundant
- Releases most energy
- Carbon Dioxide/Water produced
- Hottest flame (blue)
INCOMPLETE COMBUSTION
- Occurs when
- air/oxygen is limited
- CO and C are formed
- Limits energy produced
- Yellow, Sooty and Cooler Flames
DEFINITION
WHAT IS IT?
RELATIONS TO CHEMISTRY CLASS
WRITING FORMULAS
Complete Combustion
CxHy + O2(g) → CO2(g) + H2O(g) + energy
Incomlete Combustion
many possible reaction products
BALANCING
Balance the Hydrogen and Carbon atoms
Balance the Oxygen atoms
Check if left side equals right side
NAMING
make sure it is combustion
identify the hydrocarbon
prefixes
alkanes end in "ane"
BYPRODUCTS
- Water
- COx
- Soot (Carbon)
- NOx
- Sulfur Dioxide
- Hydrocarbons
- Particles

EXAMPLES
WOOD
AUTOMOBILES
- Incomplete Combustion
- Catalytic converter allows for a more complete combustion
- Exhaust consists of N2, NOx, H2O, CO2 and CO
FOSSIL FUELS
About 82% of the world's energy
Coal is the dirtiest, cheapest and most available
1 kg of coal produces ~29.3 MJ of energy
HOUSEHOLD APPLIANCES
Burn fuel for heating, cooking, etc.
many types of fuels used
ovens, stoves, fireplaces, furnaces, etc.
ROCKETS
IMPACT ON SOCIETY AND ENVIRONMENT
ENVIRONMENT
Global warming
Smog
Acid rain
carcinogens
ECONOMIC
TECHNOLOGY
The Backbone of Our Society
Power Plants
Engines
Appliances
INDUSTRIAL
-clear land
-residential
-recreational
-waste removal
-metal work/refinery
-electricity
HEALTH
References
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Alkane and cycloalkane nomenclature I. (n.d.). Retrieved March 06, 2016, from https://www.khanacademy.org/
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www.avogadro.co.uk/h_and_s/bondenthalpy/bondenthalpy.htm
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www.nrcan.gc.ca/energy/publications/efficiency/industrial/cipec/6695
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http://chemistry.about.com/od/chemicalreactions/a/Combustion-Reactions.htm
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(Jefferson, 2010)
Major class of chemical reactions
fuel burns in oxygen to produce combustion products
usually a flame as well
("Bond Breaking and Bond Making in Chemical Reactions", n.d.)
("Bond Breaking and Bond Making in Chemical Reactions", n.d.)
(Haberer, 2011)
CnH2n+2
(“Alkane and cycloalkane nomenclature” n.d.)
(Haberer, 2011)
(“Combustion Appliances, 2009)
(“Environmental Impacts, 2015)

("Furnace", 2015)
("Radiant Heater", n.d.)
(Lazarová, 2013)
WHY IS INCOMPLETE COMBUSTION BAD?
Hazards in the Real World
Synthetic materials and firefighters today
Forest fires and natural poison
(Complete and incomplete combustion, n.d.)
(Haberer, S., & DiGiuseppe, M., 2011)
(Haberer, S., & DiGiuseppe, M, 2011)
(Products of Combustion, n.d)
(Health Effects of Exposure to Combustion By-products, n.d.)
(How Catalytic Converters Work, 2000)
(Exhaust gases: What impact on health, n.d.)

(Before and After of Intake Valve cleaning, n.d)
-Essential for survival (Heat, cooking, etc.)
(Cooking over fire, 2014)
(Ford Assembly Line in1913, 2011)
(ALAMY, n.d)
-Incomplete combustion

-Cellulose mainly
(Organic Compounds, n.d)
- Organic compounds
-the source of energy (ATP)
(Cellular Respiration, 2015)
(Pires, 2013)
(Complete Combustion, 2009)
(Haberer, S., & DiGiuseppe, M, 2011)
(Haberer, S., & DiGiuseppe, M., 2011)
(Haberer, S., & DiGiuseppe, M., 2011)
(Precious metals refinery, 2014)
(Thompson, 2014)
(Meyers, A., n.d.)
(Institute for Energy Research, n.d.)
(European Nuclear Society, n.d.)
(Science Clarified, n.d.)
(Strandberg, n.d.)
(Benson, 2015)
(Watz, A., 2015)
(Helmenstine, 2015)
(“Alkane and cycloalkane nomenclature” n.d.)
(O'Neal, 2015)
("Basics of Space Flight: Rocket Propulsion", n.d.)

("Basics of Space Flight: Rocket Propulsion", n.d.)
(“Combustion By-products”, n.d.)

(Coal Heating System, 2012)
Incomplete Combustion:
Complete Combustion:
(Wikimedia, n.d.)
By: Harleen, Shivam, Ganan, Simran and Julie Tran
(Photo-Dictionary, n.d.)
("Lungs", n.d.)
("Heart", n.d.)
("I have Cancer!", 2015)
("Ostéopathie", n.d.)
("flame retardants", 2012)
(Alamy, n.d.)
("What is Hemoglobin?", n.d.)
("Fire Triangle", 2015)
(Howzit, n.d)
(Redwood forest, 2015)
(Burke, 2013)
(Methane 3D Balls, n.d)
Full transcript