Dynamic Equilibrium

Chemistry: Cambridge International GCSE Supplement, topic 6.3.3

Dynamic Equilibrium

When reversible reactions happen within a closed system, a dynamic equilibrium will eventually be reached.

Closed system

Closed system

  • A closed system is a system where reactants and products can neither be added nor removed.
Dynamic equilibrium

Dynamic equilibrium

  • At dynamic equilibrium, the rates of the forwards and backwards reactions are equal.
  • The equilibrium is dynamic because both the forward and backward reactions are still taking place.
  • The concentrations of reactants and products do not change when a reaction is at dynamic equilibrium.

Test yourself on Dynamic Equilibrium

  • A sealed flask contains a reversible reaction, and no reactants or products can enter or leave the flask. What type of system is this?

  • Why is chemical equilibrium described as dynamic?

  • Which word describes this type of chemical equilibrium?

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