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GRAIN ELEVATOR MODEL DIAGRAM

GRAIN ELEVATOR MODEL DIAGRAM. Paint can. Candle. Funnel. Lycopodium. Tubing. Air source. CHEMISTRY. Reaction: ( C 6 H 10 O 5 ) n (s) + O 2 (g)  CO 2 (g) + H 2 O (g) This is a combustion reaction.

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GRAIN ELEVATOR MODEL DIAGRAM

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

  2. CHEMISTRY • Reaction: (C6H10O5)n(s) + O2(g)  CO2(g) + H2O (g) • This is a combustion reaction. • The candle provides the “activation energy”—the energy required to get a reaction going/started. • Increased surface area creates a chain reaction  EXPLOSION (food dust).

  3. Potential Energy Diagram ENERGY  Ea reactants H products REACTION PROGRESS 

  4. Explosion of DeBruceGrain ElevatorWichita, Kansas8 June 1998

  5. Source: US Department of Laborwww.osha.gov/as/opa/foia/debruce-cover1.jpg

  6. (kJ) 225 kJ – 75 kJ = 150 kJ

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