AP Chem Unit 5 Mac Flashcards

Units of K zero order

L-1, S-1, or Ms-1

Units of K first order

S-1

In order for a reaction to happen particles must…

1. collide w correct orientation
2. collide w enough energy

ln\[A\] vs time

linear graph of 1st order

(1/\[A\]) vs time

linear graph of 2nd order

\[A\] vs time

linear graph of 0 order

How do you identify rate determining step?

slowest step

intermediates are identified by…

being a product then reactant

catalysts are identified by…

being a reactant then a product

define catalyst

speeds up reaction and does not get used

five ways to speed up a reaction

1. catalyst
2. increase temperature
3. increase concentration
4. increase pressure (gases only)
5. increase surface area (solids only)

Half life for first order

t(1/2)=0.693/K

radioactivity decay is always…

first order

On a PE diagram, a big “hill” means

high activation energy, slow reaction

x+2y→xy2, rate=

rate=k\[x\]\[y\]2, no intermediates, reactants only