Unit 8 Reaction Kinetics

Rate of reaction: c__ i_ a__ o_ r__ o_ p__ d__ b_ t__
>OR change in c__ over time
>OR g__ of conc/time graph

change in amt of reactants or product divided by time, conc, gradient

Activation energy (E_a): m__ e__ n__ f__ e__ c__

min energy needed for effective collision

Collision theory
> for a c__ to occur, particles need to c__ w/ each other w/ c__ o__ AND e__

collision, collide, correct orientation, energy

	__ collision	__ collision
Orientation	correct	incorrect
Energy	sufficient (Ea)	not enough
Reaction occurs?	yes	no

effective, ineffective

Factors of RoR:
> c__, p__, s_, t__

conc, pressure, sa, temp

Factors of RoR:
incr conc = incr # of p__ in g__ v__ of s__ = incr c__ f__ = incr e__ collisions = incr RoR

particles, given volume, solvent, collision freq, effective

Factors of RoR:
incr pressure = particles c__ together = incr c__ f__ = incr e__ collisions = incr RoR

closer, collision freq, effective

Factors of RoR:
incr s.a.: incr c__ of e__ collisions = incr RoR

chance, effective

Factors of RoR:
incr temp = incr __ = incr c__ f__ = incr e__ collisions AND more p__ w/ __ > __ (greater effect) = incr RoR

Ek, collision freq, effective, particles, Ek, Ea

Maxwell-Boltzmann Distribution

shaded area = proportion of molecules w/ enough e__ for r__ to occur

energy, reaction

Maxwell-Boltzmann Distribution
> incr temp = curve f__ & shifts __ ;; E_a not affected

flattens, right

Catalysts provides a__ r__ p__ w/ l__ __ than u__ reaction
> for a Maxwell-Boltzmann diagram, it ONLY shifts __ __ ;; shape is u__
> for a reaction pathway (ΔH), it ONLY shifts __ __

alt reaction pathway, less Ea, uncatalysed, Ea left, unchanged, Ea down

Homogeneous catalyst: catalyst in __ p__ as r__

same phase, reactants

Heterogeneous catalyst: catalyst in __ p__ as r__

diff phase, reactants