A - CI7.1 Chemical Equilibrium
- Created by: Gemma
- Created on: 08-11-12 12:07
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Dynamic Equilibrium
- Equilibrium - state of balance in which nothing changes
- Closed system - when nothing can exit or enter
- Equilibrium is a reversible change
- Dynamic Equilibrium - when the system is in equilibrium the reactants and prodcuts react at the same rate in a closed system
eg.
Carbon Dioxide reacts with Water:
- Hydrogencarbonate ions and hydrogen ions formed
- (>< = reversible sign)
CO2(aq) + H2O(l) >< HCO3-(ag) + H+(aq)
- Reaction going from left to right = forward reaction
- Reaction going from right to left = backward reaction
- Substances on the left = reactants
- Substances on the right = products
Position of Equilibrium
- Change the concentration of one side - no longer in equilibrium so concentraions will change to go back to equilibrium
- Concentrations may not be equal but the rate is equal
Shifting the Position
Can be altered by changing:
- Concentration of the …
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