Lecture 3: Chemical Equilibrium Flashcards
There are three requirements for a chemical reaction to occur
- Molecules must collide
- Molecules must be in the proper orientation when they collide
- Molecules must have the appropriate amount of energy during collision
is the minimum amount of energy particles must possess for collisions to result to the occurrence of a chemical reaction
ACTIVATION ENERGY
is how fast products are formed in a certain amount of time measured in amount of time
Reaction rate
Factors affecting the rate of chemical reactions
- Temperature
- Reactant Concentration
- Catalyst
Increasing the temperature in a reaction increases the kinetic energy of particles
TEMPERATURE
More reactant molecules will increase the number of collisions leading to the occurrence of chemical reactions
REACTANT CONCENTRATION
Lowers the activation energy of a chemical reactions making it easier for products to form from reactants
CATALYST
When we substitute the values of the molar concentrations, we get the equilibrium constant which is a ______________
unitless numerical value
Large Kc
favors products
Small Kc
favors reactants
The state of equilibrium of a reversible chemical reaction can be disrupted by external factors
LE CHATELIER’S PRINCIPLE
SHIFT: Decreasing the volume
Fewer moles of gas
SHIFT: Increasing the volume
More moles of gas
ENDO SHIFT: Increasing the temperature
Products (forward reaction)
ENDO SHIFT: Decreasing the temperature
Reactants (reverse reaction)
