Le Chatelier's Principle Flashcards
(12 cards)
The position of the equilibrium refers to the
relative amounts of products and reactants in an equilibrium mixture
When the position of equilibrium shifts to the left, it means the concentration of reactant …………….
increases
When the position of equilibrium shifts to the right, it means the concentration of products …………….
increases
Le Chatelier’s principle says that if a change is made to a system in dynamic equilibrium, the position of the equilibrium ……………..
moves to counteract this change
The principle is used to predict changes to the position of equilibrium when there are changes in temperature, pressure or concentration
If there is an increase in concentration of reactants what happens
Equilibrium shifts to the right to reduce the effect of increase in concentration of a reactant
If there is an increase in concentration of products what happens
Equilibrium shifts to the left to reduce the effect of increase in concentration of a product
If there is an increase in pressure what happens to equilibrium
Equilibrium shifts to the side with the least amount of molecules of gas to decrease the pressure again
Q
If there is an decrease in pressure what happens to equilibrium
Equilibrium shifts to the side with the most amount of molecules of gas to increase the pressure again
If there is an increase in temperature what happens to equilibrium
Equilibrium moves in the endothermic reaction way to counteract change
If there is an decrease in temperature what happens to equilibrium
Equilibrium move sin the exothermic direction way to counteract change
A catalyst is
A catalyst is a substance that increases the rate of a chemical reaction (they increase the rate of the forward and reverse reaction equally)
Catalysts only cause a reaction to reach equilibrium faster
Catalysts therefore have what effect on equilibrium
no effect on the position of the equilibrium once this is reached
