5.2 Position Of Equilibrium Flashcards
Definition of Le Chatelier’s Principle
If a change is made to a system in equilibrium, the system will respond to counteract that the change and establish a new equilibrium
+ will not restore to the same position before change of conditions
Factors that cause an equilibrium to shift:
- Inc/dec Concentration
- Dilution by adding water
- Change to Gas partial pressure (individual change to a component gas within a total mixture)
- Change to total pressure (by changing volume)
- Inc/dec Temperature
2 things that do not affect the position of equilibrium are:
1) Catalysts: they can only increase the rates of reaction
2) Presence of inert gas: Since it does not react with other substances, no net reaction happens
Increasing the concentration of reactants will…
cause the eq. to shift to the right side
Decreasing the concentration of reactants will…
cause the eq. to shift to the left side
Increasing concen. of products will…
cause eq to shift to left side
Decreasing concen. of products will…
cause eq. to shift to right side
When dilution by adding water occurs…
1) No. of particles per volumes reduces which decreases the concen. of all species
2) System shifts to favour side producing greater no. of dissolved particles
(true/false) At constant temp, partial pressure is proportional to concen.
True.
Inc. partial pressure of Reactant gas will…
cause eq. to shift to products side
Dec. Increasing partial pressure of gas product will…
cause eq. to shift to reactants side
(recap) What is Boyle’s law?
Volume is inversely proportional to temp
When total pressure is dec. (via increasing volume):
Eq. shifts to side producing more mols of gas
When total pressure is inc (via decreasing volume)
Eq. shifts to side producing lesser mols of gas
Inc temp of an endothermic reaction…
causes eq to shift to right side
