10.4 Dynamic Equilibrium And Le Chatelier's Principle Flashcards
(12 cards)
What is a reversible reaction?
A reaction that takes place in both forward and reverse directions
What happens in an equilibrium system?
-The rate of the forward reaction is equal to the rate of the reverse reaction
-The concentration of reactants and products does not change
What is a dynamic equilibrium?
The equilibrium that exists in a closed system where concentrations do not change, that is constant
What is Le Chatelier’s Principle?
When a system in equilibrium is subjected to an external change, the system readjusts itself to minimise the effects of that change
What is the position of equilibrium?
The relative quantities of reactants and products, indicating the extent of the reversible reaction
Following Le Chatelier’s Principle, what would an increase in temperature do to the equilibrium?
Would shift the equilibrium in the endothermic direction
Following Le Chatelier’s Principle, what would a decrease in temperature do to the equilibrium?
Would shift the equilibrium in the exothermic direction
Following Le Chatelier’s Principle, what would an increase in concentration of reactants do to the equilibrium?
Shifts the position of the equilibrium to the right
Following Le Chatelier’s Principle, what would an increase in concentration of products do to the equilibrium?
Shifts the position of the equilibrium to the left
Following Le Chatelier’s Principle, what would an increase in pressure of the system do to the equilibrium?
Shifts the equilibrium to the side with fewer molecules
When will pressure affect the position of the equilibrium?
Only if there are gases present
How do catalysts affect equilibriums?
-They do not, they speed up the rate of both reactions equally
-A catalyst increases the rate at which equlibrium is established
