Exam 3 Flashcards
Instantaneous Rate
Slope of tangent line
Dynamic equilibrium
- reaction is still going
- can’t detect changes
- the rates are equal
Reaction mechanism
Pathway that leads from reactants to products
Rate law
Shows the relationship of the rate of a reaction to the rate constant and the concentration of the reactants
Catalyst
Makes reaction go faster
- enzyme
- weakens pi bond
- substrate goes into enzyme active site
- lowers activation energy
Ka
Acid dissociation constant
- used to quantify acid strength
- large means strong acid
- small pKa means strong acid
Le Chateliers principle
If a stress is applied to a system at equilibrium the system will move to contract the stress and reestablish a new equilibrium position
-can predict but not explain the shifts
Activation energy
Do you change between reactants and transition state
Rate constant
Representation of the probability of the collision will lead to products
Catalyst
- speeds up interaction
- usually a transition metal
Buffer
A mixture of a weak acid and it’s conjugate base
-Strong acid will react with any base ad
Henderson-hasslebalch equation
- buffered solutions only
- use to find ph
- ph is =to pka in buffered solution
Buffer capacity
The amount of acid or base a buffer can absorb with out a large change in ho
