When the equilibrium in a closed system is disturbed, the system will re-instate a new equilibrium by favoring the reaction that will oppose the disturbance.
Reversible Reaction
A reaction is reversible when products can be converted back to reactants and vice versa.
Chemical Equilibrium
It is a dynamic equilibrium when the rate of the forward reaction equals the rate of the reverse reaction.
How to Answer Le Chateliers Principle Questions
1.Identify the change.
2. Reaction of the system (how will the system counteract the change?)
3. Favoured reaction.
4. Effect
Kc value only changes with what variable?
TEMPERATURE
Kc < 1 =?
Reverse reaction favored,
[Products] < [Reagents]
Kc > 1 =?
Forward reaction favored,
[products]> [reagents]
Open System
An open system continuously interacts with its environment.
Closed system
Is isolated from its surroundings.
Factors that Influence the position of an equilibrium.