GRAIN ELEVATOR MODEL DIAGRAM

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GRAIN ELEVATOR MODEL DIAGRAM
Paint can
Candle
Funnel
Lycopodium
Tubing
Air source
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CHEMISTRY

• Reaction
• (C6H10O5)n(s) O2(g) ?
• CO2(g) H2O (g)
• This is a combustion reaction.
• The candle provides the activation energythe
  energy required to get a reaction going/started.
• Increased surface area creates a chain reaction ?
  EXPLOSION (food dust).

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Potential Energy Diagram
ENERGY ?
Ea
reactants
H
products
REACTION PROGRESS ?
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Explosion of DeBruceGrain Elevator Wichita,
Kansas8 June 1998
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Source US Department of Laborwww.osha.gov/as/opa/
foia/debruce-cover1.jpg
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(kJ)
225 kJ 75 kJ
150 kJ