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Combustion Reactions. And Their Products. Combustion. a chemical reaction that occurs in the presence of OXYGEN and the release of ENERGY. combustion reactions involve the burning of hydrocarbons an organic compound containing only carbons and hydrogen atoms.

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combustion reactions

Combustion Reactions

And Their Products

combustion
Combustion
  • a chemical reaction that occurs in the presence of OXYGEN and the release of ENERGY
slide3
combustion reactions involve the burning of hydrocarbons an organic compound containing only carbons and hydrogen atoms
combustion of methane gas
Combustion of Methane Gas
  • CH4 + O2CO2 + H2O
  • REACTANTS = PRODUCTS
  • Oxides produced are released into the atmosphere as emissions
balancing hydrocarbon combustion reactions
Balancing Hydrocarbon Combustion Reactions
  • Start with the Carbons
  • Then the Hydrogens
  • Lastly balance the Oxygen's
example
Example
  • CH4 + O2CO2 + H2O
  • 1CH4 + O21CO2 + H2O
  • 1CH4 + O21CO2 + 2H2O
  • 1CH4 + 2 O21CO2 + 2H2O
importance of co 2
Importance of CO2
  • Photosynthesis
  • Cellular Respiration
  • Greenhouse Gas
  • Global warming
  • Increase CO2 , increases temperatures
  • Carbon Cycle
examples
Examples
  • C2H6+ O2 CO2 + H2O
  • C5H12 + O2 CO2 + H2O
  • C4H8 + O2 CO2 + H2O
  • C4H10 + O2 CO2 + H2O
  • Combustion of C8H18
carbon monoxide
Carbon Monoxide
  • CO (g) is another common product of combustion
  • Carbon monoxide is produced when there is an incomplete combustion.
  • When the quantity of oxygen is limited
  • Automobile emissions
problems with c arbon monoxide
Problems with carbon monoxide
  • inhaling – competes with the oxygen molecule on the hemoglobin
  • thus, decreases the availability of oxygen to your body
  • Furnace in your home - CO detectors
oxides of sulfur
Oxides of Sulfur
  • product of burning fuels
  • Coal
  • Crude oil
  • tar sands
  • natural gas
slide13
Natural gas is another energy source that commonly contains sulfur, but in a form of hydrogen sulphide
  • H2S
  • present in Sour gas,
  • toxic to humans
  • If combined with water forms an acidic solution
slide14
processing natural gas often involves the removal of hydrogen sulphide
  • This is called SWEETENING
  • 40 % of natural gas in Alberta contain sour gas, thus removal of H2S is vital
flaring process
Flaring Process
  • H2S + O2SO2 + H2O
  • SO2 + O2SO3
  • sulfur dioxide
  • sulfur trioxide
facts
Facts
  • Burning coal in Alberta contains less sulfur than the coal burned in eastern Canada
  • emissions of SO2also comes from the refining of metal ores (nickle)
oxides of nitrogen
Oxides of NITROGEN
  • 78.1 % of earth’s atmosphere contains N2 (nitrogen gas)
  • N2 + O2 2NO
  • 2NO + O2 2 NO2
  • These are commonly referred to Nox compounds
common sources of no x
Common Sources of NOx
  • High temperature combustion processes
  • above 650 ‘c
  • Automobiles
  • Furnaces
monitoring emissions in alberta
Monitoring Emissions in Alberta
  • Alberta Environment
  • show -- MAML movie (Mobile Air Monitoring Lab)
homework
Homework
  • read pages 152-162
  • Do the following questions;
  • page 164 #1-10
  • student hand-out (teacher provided0
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