Le Chatelier’s Principle Flashcards
What does Le Chatelier’s Principle?
if a chemical system at equilibrium experiences a change, then the equilibrium shifts to counteract the imposed change and a new equilibrium is established
If products are added, how is equilibrium reestablished?
reaction shifts towards the the reactants
What does it mean when Q > K?
there are more products
If the volume of a container of gases is decreased how is equilibrium reestablished?
The pressure increases, thus the reaction shifts to the side of the reaction with the fewest number of moles of gas
If the temperature is increased in an exothermic reaction, how is equilibrium reestablished?
the reaction shift to the reactants
What are the 2 conditions where volume will affect equilibrium?
o This is only an effect for reactions that involve gases
o The volume only affects reactions that have different numbers of moles of gas in the products and reactants
If reactants are added, how is equilibrium reestablished?
reaction shifts toward the products
If the volume of a container of gases is increased how is equilibrium reestablished?
The pressure decreases, thus the reaction shifts to the side of the reaction with the greatest number of moles of gas
If reactants are removed, how is equilibrium reestablished?
reaction shifts towards the the reactants
If the temperature is decreased in an exothermic reaction, how is equilibrium reestablished?
the reaction shifts to the products
If products are removed, how is equilibrium reestablished?
reaction shifts toward the products
If the temperature is decreased in an endothermic reaction, how is equilibrium reestablished?
the reaction shifts to the products
Why does increasing the pressure of a container by adding an inert gas?
The partial pressure of gases remains the same
What happens when the volume of a container is increased by adding an inert gas?
o When the volume is increased by adding an inert gas at constant pressure, the total pressure stays constant, but the partial pressures of the reactant and products will increase. This has the effect of diluting the mixture and is identical to simply mechanically increasing the volume
If a reaction is concentrated, how is equilibrium reestablished?
The reaction will shift to the side with the fewest number of species in solution
