La Chateleirs Principle Flashcards
what is la chatliers principle
when a system at equilibrium is disturbed, the new equilibrium shifts in the direction that opposes the change, until a new equilibrium is reached
what are the three common ways an equilibrium may be disturbed
change in the concentration of a reactant or product, change in temperature, change in the volume
what happens if you change the temperature of a reaction by more then a few degrees
the Kc value will change
according to le chatliers principle, what will happen to the reaction if it is disturbed by the addition of a product/the removal of a reactant
the equilibrium will shift right
what does the equilibrium do when you add something
it works away from whatever you add
what does the equilibrium do when you remove something
it works towards whatever you remove
what shifts occur in an equilibrium when you add or remove solids
no shifts occur when you add/remove solids becuase they are constant and do not appear in expressions for K
how does a graph show that a substance has been added or removed from an equilibrium
a spike in either a reactant or product (just one) will occur, and a gradual change will be present in the other entities
what does adding something do to that substances concentration
it increases it
what does removing something do that substances concentration
it decreases it
what happens when you add more of a reactant
more products will be produced
what happens when you remove some of a reactant
less products will be produced
what happens to temperature if energy decreases
temperature decreases
what happens to temperature if energy is increased
temperature increases
what happens if you increase the temperature in an endothermic reaction where heat acts like a reactant
the reaction shifts to the right
