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…
collide w correct orientation
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
catalyst
increase temperature
increase concentration
increase pressure (gases only)
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