La Chateleirs Principle Flashcards
what does the equilibrium do when you add something
it works away from whatever you add
what happens if you increase the temperature in an exothermic reaction where heat acts like a product
the reaction shifts to the left
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 happens if you change the temperature of a reaction by more then a few degrees
the Kc value will change
what happens to pressure if volume is decreased
pressure increases
how do temperature/energy changes appear on a graph
as a gradual change with an opposite change in the products
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 left/towards the reactants
what happens if the K value gets bigger and how does this shift the reaction
more products are being created which shifts the reaction to the right
how does a decrease in volume affect an equilibrium
it causes the reaction to shift in the direction which contains the fewest moles of gas
what happens if both sides of a chemical equation have the same number of moles of gas
the change in volume of the container has no effect on the equilibrium
what does removing something do that substances concentration
it decreases it
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 temperature affect energy
if temperature decreases, energy decreases; if temperature increases, energy increases
is there any spikes present in an energy change graph
no spikes, only gradual changes
what happens if you increase the temperature in an endothermic reaction where heat acts like a reactant
the reaction shifts to the right
