16-3: LaChatlier’s Principle Flashcards
What is LeChatelier’s Principle?
If an equilibrium is disturbed, the system will shift to restore the equilibrium or the original Keq.
What are the different ways of disturbing?
-changing concentration
-changing temperature
-changing pressure
When changing concentrations, when does the rate of forward/reverse reaction increase?
When adding reactant
When adding product
When changing concentrations, when does the shit shift right or left?
Right: reactant is added
Left: product is added
What does changing pressure apply to?
It applies to only gasses
What happens when the pressure changes?
The pressure will eventually be restored to its own one
What happens when the pressure increases vs decreases?
Increase: Shift to the side with less molecules (add coefficients)
Decrease: Shift to the side with more molecules (add coefficients)
What does changing temperature to?
It changes the value of Keq.
When heat is a product, what does heating or cooling do?
Heat: reaction shifts left to compensate for extra heat
Cool: the heat is removed. The reaction shifts to the right to replace the lost heat
When heat is a reactant, what does heating and cooling do?
Heat: shift right
Cool: shift left
What do catalysts do?
-It does nothing in relationship with effecting the equilibrium
-it helps bring equilibrium faster
