Bond Energies
- Created by: Abbie
- Created on: 19-05-12 11:48
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Bond Energies
Energy level diagrams:
In exothermic reactions:
- Delta H is -ve - change in energy is negative
- The products are at a lower energy than the reactants
- The difference in height represents the energy given out in the reaction (per mole)
- The initial rise in the line represents the energy needed to break the bonds - activation energy
In endothermic reactions:
- Delta H is +ve - change in energy is positive
- The products are at a higher energy than the reactants
- The difference in height represents the energy taken in during the reaction
Activation energy - minimum energy needed for the reaction to…
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