Le Chateliers principle

Increase of reactants

Equilibrium shifts right, favors product formation

Decrease of Products

Equilibrium shifts right, favors product formation

Decrease in Reactants

Equilibrium shifts left, favors reactant formation

Increase in Products

Equilibrium shifts left, favors reactant formation

Increase in volume or decrease in pressure

Favors the side of the reaction with more gas state molecules (moles)

Volume decreases or pressure increases

Favors the side of the reaction with less gas state molecules (moles)

Increase in Temperature

Shifts away from the side that contains the energy term

Decrease in Temperature

Shifts towards the side that contains the energy term

Addition of a catalyst

No shift will occur

stressors

change in concentration, temperature, or pressure/volume

Equilibrium

a system in which the forward reaction is equal to the reverse reaction resulting in no net change

Le Chatelier's Principle

if any change is imposed on a system that is in equilibrium then the system tends to adjust to a new equilibrium to counteract the change

-🔺H

Exothermic reaction. Heat is a product. Gets warmer

+🔺H

Endothermic reaction. Heat is a reactant. Gets colder.

H2 + I2 --> 2HI
Increase [H2]

shift right= form more products

H2 + I2 --> 2HI
Increase [HI]

shift left= form more reactants

H2 + I2 --> 2HI
Increase pressure

No shift same amount of moles on both sides

H2 + I2 --> 2HI
delta H = 59 kJ If heat is increased equilibrium will shift to the ____

right because it is endothermic. Heat is a reactant

H2 + I2 --> 2HI
delta H = 59 kJ If heat is decreased equilibrium will shift to the ____

left because it is endothermic. Heat is a reactant